diff --git a/MicroDexed.ino b/MicroDexed.ino
index 8365635..cedcb1d 100644
--- a/MicroDexed.ino
+++ b/MicroDexed.ino
@@ -29,15 +29,10 @@
 #include <SD.h>
 #include <MIDI.h>
 #include <EEPROM.h>
-#if defined(USBCON)
-#include <midi_UsbTransport.h>
-#endif
+#include "midi_devices.hpp"
 #include <limits.h>
 #include "dexed.h"
 #include "dexed_sysex.h"
-#ifdef USE_ONBOARD_USB_HOST
-#include <USBHost_t36.h>
-#endif
 
 #ifdef I2C_DISPLAY // selecting sounds by encoder, button and display
 #include "UI.h"
@@ -129,20 +124,6 @@ bool master_key_enabled = false;
 elapsedMillis cpu_mem_millis;
 #endif
 
-#ifdef MIDI_DEVICE
-MIDI_CREATE_INSTANCE(HardwareSerial, MIDI_DEVICE, midi_serial);
-#endif
-#ifdef USE_ONBOARD_USB_HOST
-USBHost usb_host;
-MIDIDevice midi_usb(usb_host);
-#endif
-#if defined(USBCON)
-static const unsigned sUsbTransportBufferSize = 16;
-typedef midi::UsbTransport<sUsbTransportBufferSize> UsbTransport;
-UsbTransport sUsbTransport;
-MIDI_CREATE_INSTANCE(UsbTransport, sUsbTransport, midi_onboard_usb);
-#endif
-
 #ifdef TEST_NOTE
 IntervalTimer sched_note_on;
 IntervalTimer sched_note_off;
@@ -177,23 +158,7 @@ void setup()
   Serial.println(F("<setup start>"));
   initial_values_from_eeprom();
 
-  // start up USB host
-#ifdef USE_ONBOARD_USB_HOST
-  usb_host.begin();
-  Serial.println(F("USB-MIDI enabled."));
-#endif
-
-  // check for onboard USB-MIDI
-#if defined(USBCON)
-  midi_onboard_usb.begin();
-  Serial.println(F("Onboard USB-MIDI enabled."));
-#endif
-
-#ifdef MIDI_DEVICE
-  // Start serial MIDI
-  midi_serial.begin(DEFAULT_MIDI_CHANNEL);
-  Serial.println(F("Serial MIDI enabled"));
-#endif
+  setup_midi_devices();
 
   // start audio card
   AudioMemory(AUDIO_MEM);
@@ -369,7 +334,7 @@ void loop()
   }
 
   // MIDI input handling
-  handle_input();
+  check_midi_devices();
 
 #ifdef I2C_DISPLAY
   // UI
@@ -390,106 +355,132 @@ void loop()
 #endif
 }
 
-void handle_input(void)
+void handleNoteOn(byte inChannel, byte inNumber, byte inVelocity)
 {
-#if defined(USBCON)
-  while (midi_onboard_usb.read())
+  if (checkMidiChannel(inChannel))
   {
-#ifdef DEBUG
-    Serial.println(F("[ONBOARD-MIDI-USB]"));
-#endif
-    if (midi_onboard_usb.getType() >= 0xf0) // SysEX
-    {
-      handle_sysex_parameter(midi_onboard_usb.getSysExArray(), midi_onboard_usb.getSysExArrayLength());
-    }
-    else
-    {
-      queue_midi_event(midi_onboard_usb.getType(), midi_onboard_usb.getData1(), midi_onboard_usb.getData2());
-#ifdef MIDI_MERGE_THRU
-#ifdef USB_CON
-      midi_onboard_usb.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-#ifdef USE_ONBOARD_USB_HOST
-      midi_usb.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-      midi_serial.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-    }
+    ;
   }
-#endif
-#ifdef USE_ONBOARD_USB_HOST
-  usb_host.Task();
-  while (midi_usb.read())
+}
+
+void handleNoteOff(byte inChannel, byte inNumber, byte inVelocity)
+{
+  if (checkMidiChannel(inChannel))
   {
-#ifdef DEBUG
-    Serial.println(F("[MIDI-USB-HOST]"));
-#endif
-    if (midi_usb.getType() >= 0xf0) // SysEX
-    {
-      handle_sysex_parameter(midi_usb.getSysExArray(), midi_usb.getSysExArrayLength());
-    }
-    else
-    {
-      queue_midi_event(midi_usb.getType(), midi_usb.getData1(), midi_usb.getData2());
-#ifdef MIDI_MERGE_THRU
-#ifdef USB_CON
-      midi_onboard_usb.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-#ifdef USE_ONBOARD_USB_HOST
-      midi_usb.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-      midi_serial.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-    }
+    ;
   }
-#endif
-#ifdef MIDI_DEVICE
-  while (midi_serial.read())
+}
+
+void handleControlChange(byte inChannel, byte inData1, byte inData2)
+{
+  if (checkMidiChannel(inChannel))
   {
-#ifdef DEBUG
-    Serial.print(F("[MIDI-Serial] "));
-#endif
-    if (midi_serial.getType() >= 0xf0) // SYSEX
-    {
-      handle_sysex_parameter(midi_serial.getSysExArray(), midi_serial.getSysExArrayLength());
-    }
-    else
-    {
-      queue_midi_event(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2());
-#ifdef MIDI_MERGE_THRU
-#ifdef USB_CON
-      midi_onboard_usb.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-      midi_usb.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-      midi_serial.send(midi_serial.getType(), midi_serial.getData1(), midi_serial.getData2(), midi_serial.getChannel());
-#endif
-    }
+    ;
   }
-#endif
 }
 
-#ifdef DEBUG
-#ifdef SHOW_MIDI_EVENT
-void print_midi_event(uint8_t type, uint8_t data1, uint8_t data2)
+
+
+void handleAfterTouch(byte inChannel, byte inPressure)
 {
-  Serial.print(F("Listen MIDI-Channel: "));
-  if (midi_channel == MIDI_CHANNEL_OMNI)
-    Serial.print(F("OMNI"));
-  else
-    Serial.print(midi_channel, DEC);
-  Serial.print(F(", MIDI event type: 0x"));
-  if (type < 16)
-    Serial.print(F("0"));
-  Serial.print(type, HEX);
-  Serial.print(F(", incoming MIDI channel: "));
-  Serial.print((type & 0x0f) + 1, DEC);
-  Serial.print(F(", data1: "));
-  Serial.print(data1, DEC);
-  Serial.print(F(", data2: "));
-  Serial.println(data2, DEC);
+  ;
 }
+
+void handlePitchBend(byte inChannel, int inPitch)
+{
+  ;
+}
+
+void handleProgramChange(byte inChannel, byte inProgram)
+{
+  ;
+}
+
+void handleSystemExclusive(byte *data, uint len)
+{
+  handle_sysex_parameter(data, len);
+}
+
+void handleSystemExclusiveChunk(const byte *data, uint16_t len, bool last)
+{
+  ;
+}
+
+void handleTimeCodeQuarterFrame(byte data)
+{
+  ;
+}
+
+void handleAfterTouchPoly(byte inChannel, byte inNumber, byte inVelocity)
+{
+  ;
+}
+
+void handleSongSelect(byte inSong)
+{
+  ;
+}
+
+void handleTuneRequest(void)
+{
+  ;
+}
+
+void handleClock(void)
+{
+  ;
+}
+
+void handleStart(void)
+{
+  ;
+}
+
+void handleContinue(void)
+{
+  ;
+}
+
+void handleStop(void)
+{
+  ;
+}
+
+void handleActiveSensing(void)
+{
+  ;
+}
+
+void handleSystemReset(void)
+{
+  ;
+}
+
+void handleRealTimeSystem(void)
+{
+  ;
+}
+
+bool checkMidiChannel(byte inChannel)
+{
+  // check for MIDI channel
+  if (midi_channel == MIDI_CHANNEL_OMNI)
+  {
+    return (true);
+  }
+  else if (inChannel != midi_channel)
+  {
+#ifdef DEBUG
+    Serial.print(F("Ignoring MIDI data on channel "));
+    Serial.print(inChannel);
+    Serial.print(F("(listening on "));
+    Serial.print(midi_channel);
+    Serial.println(F(")"));
 #endif
-#endif
+    return (false);
+  }
+  return (true);
+}
 
 #ifdef MASTER_KEY_MIDI
 bool handle_master_key(uint8_t data)
@@ -570,10 +561,6 @@ bool queue_midi_event(uint8_t type, uint8_t data1, uint8_t data2)
 {
   bool ret = false;
 
-#if defined(DEBUG) && defined(SHOW_MIDI_EVENT)
-  print_midi_event(type, data1, data2);
-#endif
-
   // check for MIDI channel
   if (midi_channel != MIDI_CHANNEL_OMNI)
   {
diff --git a/midi_devices.hpp b/midi_devices.hpp
new file mode 100644
index 0000000..92471dd
--- /dev/null
+++ b/midi_devices.hpp
@@ -0,0 +1,1602 @@
+/*
+   MicroMDAEPiano
+
+   MicroMDAEPiano is a port of the MDA-EPiano sound engine
+   (https://sourceforge.net/projects/mda-vst/) for the Teensy-3.5/3.6 with audio shield.
+
+   (c)2019 H. Wirtz <wirtz@parasitstudio.de>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+*/
+
+#ifndef MIDI_DEVICES_H
+#define MIDI_DEVICES_H
+
+#include "config.h"
+#include <MIDI.h>
+
+#if defined(MIDI_DEVICE_USB)
+#include <midi_UsbTransport.h>
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+#include <USBHost_t36.h>
+#endif
+
+#ifdef MIDI_DEVICE_DIN
+MIDI_CREATE_INSTANCE(HardwareSerial, MIDI_DEVICE_DIN, midi_serial);
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+USBHost usb_host;
+MIDIDevice midi_usb(usb_host);
+#endif
+#ifdef MIDI_DEVICE_USB
+static const unsigned sUsbTransportBufferSize = 16;
+typedef midi::UsbTransport<sUsbTransportBufferSize> UsbTransport;
+UsbTransport sUsbTransport;
+MIDI_CREATE_INSTANCE(UsbTransport, sUsbTransport, midi_onboard_usb);
+#endif
+
+void handleNoteOn(byte inChannel, byte inNumber, byte inVelocity);
+void handleNoteOff(byte inChannel, byte inNumber, byte inVelocity);
+void handleControlChange(byte inChannel, byte inData1, byte inData2);
+void handleAfterTouch(byte inChannel, byte inPressure);
+void handlePitchBend(byte inChannel, int inPitch);
+void handleProgramChange(byte inChannel, byte inProgram);
+void handleSystemExclusive(byte *data, uint len);
+void handleSystemExclusiveChunk(const byte *data, uint len, bool last);
+void handleTimeCodeQuarterFrame(byte data);
+void handleAfterTouchPoly(byte inChannel, byte inNumber, byte inVelocity);
+void handleSongSelect(byte inSong);
+void handleTuneRequest(void);
+void handleClock(void);
+void handleStart(void);
+void handleContinue(void);
+void handleStop(void);
+void handleActiveSensing(void);
+void handleSystemReset(void);
+void handleRealTimeSystem(void);
+
+/*****************************************
+   MIDI_DEVICE_DIN
+ *****************************************/
+#ifdef MIDI_DEVICE_DIN
+void handleNoteOn_MIDI_DEVICE_DIN(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleNoteOn(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] NoteOn"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendNoteOn(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendNoteOn(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleNoteOff_MIDI_DEVICE_DIN(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleNoteOff(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] NoteOff"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendNoteOff(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendNoteOff(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleControlChange_MIDI_DEVICE_DIN(byte inChannel, byte inData1, byte inData2)
+{
+  handleControlChange(inChannel, inData1, inData2);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] CC"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendControlChange(inData1, inData2, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendControlChange(inData1, inData2, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleAfterTouch_MIDI_DEVICE_DIN(byte inChannel, byte inPressure)
+{
+  handleAfterTouch(inChannel, inPressure);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] AT"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendAfterTouch(inPressure, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendAfterTouch(inPressure, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handlePitchBend_MIDI_DEVICE_DIN(byte inChannel, int inPitch)
+{
+  handlePitchBend(inChannel, inPitch);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] PB"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendPitchBend(inPitch, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendPitchBend(inPitch, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleProgramChange_MIDI_DEVICE_DIN(byte inChannel, byte inProgram)
+{
+  handleProgramChange(inChannel, inProgram);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] PC"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendProgramChange(inProgram, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendProgramChange(inProgram, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemExclusive_MIDI_DEVICE_DIN(byte *data, uint len)
+{
+  handleSystemExclusive(data, len);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] SysEx"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendSysEx(len, data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendSysEx(len, data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemExclusiveChunk_MIDI_DEVICE_DIN(byte *data, uint len, bool last)
+{
+  handleSystemExclusiveChunk(data, len, last);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] SysExChunk"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendSysEx(len, data, last);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendSysEx(len, data, last);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleTimeCodeQuarterFrame_MIDI_DEVICE_DIN(byte data)
+{
+  handleTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] TimeCodeQuarterFrame"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleAfterTouchPoly_MIDI_DEVICE_DIN(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleAfterTouch(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] AT-Poly"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendAfterTouch(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendAfterTouch(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSongSelect_MIDI_DEVICE_DIN(byte inSong)
+{
+  handleSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] SongSelect"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleTuneRequest_MIDI_DEVICE_DIN(void)
+{
+  handleTuneRequest();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] TuneRequest"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendTuneRequest();
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendTuneRequest();
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleClock_MIDI_DEVICE_DIN(void)
+{
+  handleClock();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] Clock"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Clock);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Clock);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleStart_MIDI_DEVICE_DIN(void)
+{
+  handleStart();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] Start"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Start);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Start);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleContinue_MIDI_DEVICE_DIN(void)
+{
+  handle();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] Continue"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Continue);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Continue);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleStop_MIDI_DEVICE_DIN(void)
+{
+  handleStop();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] Stop"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Stop);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Stop);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleActiveSensing_MIDI_DEVICE_DIN(void)
+{
+  handleActiveSensing();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] ActiveSensing"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::ActiveSensing);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::ActiveSensing);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemReset_MIDI_DEVICE_DIN(void)
+{
+  handleSystemReset();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] SystemReset"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::SystemReset);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::SystemReset);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+void handlRealTimeSysteme_MIDI_DEVICE_DIN(byte inRealTime)
+{
+  handleRealTimeSystem();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_DIN] RealTimeSystem"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(inRealTime);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(inRealTIme);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+#endif // MIDI_DEVICE_DIN
+
+/*****************************************
+   MIDI_DEVICE_USB_HOST
+ *****************************************/
+#ifdef MIDI_DEVICE_USB_HOST
+void handleNoteOn_MIDI_DEVICE_USB_HOST(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleNoteOn(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] NoteOn"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendNoteOn(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendNoteOn(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleNoteOff_MIDI_DEVICE_USB_HOST(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleNoteOff(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] NoteOff"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendNoteOff(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendNoteOff(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleControlChange_MIDI_DEVICE_USB_HOST(byte inChannel, byte inData1, byte inData2)
+{
+  handleControlChange(inChannel, inData1, inData2);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] CC"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendControlChange(inData1, inData2, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendControlChange(inData1, inData2, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleAfterTouch_MIDI_DEVICE_USB_HOST(byte inChannel, byte inPressure)
+{
+  handleAfterTouch(inChannel, inPressure);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] AT"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendAfterTouch(inPressure, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendAfterTouch(inPressure, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handlePitchBend_MIDI_DEVICE_USB_HOST(byte inChannel, int inPitch)
+{
+  handlePitchBend(inChannel, inPitch);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] PB"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendPitchBend(inPitch, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendPitchBend(inPitch, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleProgramChange_MIDI_DEVICE_USB_HOST(byte inChannel, byte inProgram)
+{
+  handleProgramChange(inChannel, inProgram);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] PC"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendProgramChange(inProgram, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendProgramChange(inProgram, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemExclusive_MIDI_DEVICE_USB_HOST(byte *data, uint len)
+{
+  handleSystemExclusive(data, len);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] SysEx"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendSysEx(len, data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendSysEx(len, data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemExclusiveChunk_MIDI_DEVICE_USB_HOST(byte *data, uint len, bool last)
+{
+  handleSystemExclusiveChunk(data, len, last);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] SysExChunk"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendSysEx(len, data, last);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendSysEx(len, data, last);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleTimeCodeQuarterFrame_MIDI_DEVICE_USB_HOST(midi::DataByte data)
+{
+  handleTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] TimeCodeQuarterFrame"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleAfterTouchPoly_MIDI_DEVICE_USB_HOST(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleAfterTouchPoly(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] AT-Poly"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendAfterTouch(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendAfterTouch(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSongSelect_MIDI_DEVICE_USB_HOST(byte inSong)
+{
+  handleSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] SongSelect"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleTuneRequest_MIDI_DEVICE_USB_HOST(void)
+{
+  handleTuneRequest();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] TuneRequest"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendTuneRequest();
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendTuneRequest();
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleClock_MIDI_DEVICE_USB_HOST(void)
+{
+  handleClock();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] Clock"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Clock);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Clock);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleStart_MIDI_DEVICE_USB_HOST(void)
+{
+  handleStart();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] Start"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Start);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Start);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleContinue_MIDI_DEVICE_USB_HOST(void)
+{
+  handleContinue();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] Continue"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Continue);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Continue);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleStop_MIDI_DEVICE_USB_HOST(void)
+{
+  handleStop();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] Stop"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Stop);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::Stop);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleActiveSensing_MIDI_DEVICE_USB_HOST(void)
+{
+  handleActiveSensing();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] ActiveSensing"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::ActiveSensing);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::ActiveSensing);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemReset_MIDI_DEVICE_USB_HOST(void)
+{
+  handleSystemReset();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] SystemReset"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::SystemReset);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(midi::SystemReset);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+void handlRealTimeSysteme_MIDI_DEVICE_USB_HOST(midi::MidiType inRealTime)
+{
+  handleRealTimeSystem();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB_HOST] RealTimeSystem"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(inRealTime);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.sendRealTime(inRealTime);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+#endif // MIDI_DEVICE_USB_HOST
+
+/*****************************************
+   MIDI_DEVICE_USB
+ *****************************************/
+#ifdef MIDI_DEVICE_USB
+void handleNoteOn_MIDI_DEVICE_USB(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleNoteOn(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] NoteOn"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendNoteOn(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendNoteOn(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleNoteOff_MIDI_DEVICE_USB(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleNoteOff(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] NoteOff"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendNoteOff(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendNoteOff(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleControlChange_MIDI_DEVICE_USB(byte inChannel, byte inData1, byte inData2)
+{
+  handleControlChange(inChannel, inData1, inData2);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] CC"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendControlChange(inData1, inData2, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendControlChange(inData1, inData2, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleAfterTouch_MIDI_DEVICE_USB(byte inChannel, byte inPressure)
+{
+  handleAfterTouch(inChannel, inPressure);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] AT"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendAfterTouch(inPressure, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendAfterTouch(inPressure, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handlePitchBend_MIDI_DEVICE_USB(byte inChannel, int inPitch)
+{
+  handlePitchBend(inChannel, inPitch);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] PB"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendPitchBend(inPitch, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendPitchBend(inPitch, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleProgramChange_MIDI_DEVICE_USB(byte inChannel, byte inProgram)
+{
+  handleProgramChange(inChannel, inProgram);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] PC"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendProgramChange(inProgram, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendProgramChange(inProgram, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemExclusive_MIDI_DEVICE_USB(byte *data, uint len)
+{
+  handleSystemExclusive(data, len);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] SysEx"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendSysEx(len, data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendSysEx(len, data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemExclusiveChunk_MIDI_DEVICE_USB(byte *data, uint len, bool last)
+{
+  handleSystemExclusiveChunk(data, len, last);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] SysExChunk"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendSysEx(len, data, last);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendSysEx(len, data, last);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleTimeCodeQuarterFrame_MIDI_DEVICE_USB(midi::DataByte data)
+{
+  handleTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] TimeCodeQuarterFrame"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendTimeCodeQuarterFrame(data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendTimeCodeQuarterFrame(0xF1,data);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleAfterTouchPoly_MIDI_DEVICE_USB(byte inChannel, byte inNumber, byte inVelocity)
+{
+  handleAfterTouchPoly(inChannel, inNumber, inVelocity);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] AT-Poly"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendAfterTouch(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendAfterTouch(inNumber, inVelocity, inChannel);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSongSelect_MIDI_DEVICE_USB(byte inSong)
+{
+  handleSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] SongSelect"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendSongSelect(inSong);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleTuneRequest_MIDI_DEVICE_USB(void)
+{
+  handleTuneRequest();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] TuneRequest"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendTuneRequest();
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendTuneRequest();
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleClock_MIDI_DEVICE_USB(void)
+{
+  handleClock();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] Clock"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Clock);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Clock);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleStart_MIDI_DEVICE_USB(void)
+{
+  handleStart();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] Start"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Start);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Start);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleContinue_MIDI_DEVICE_USB(void)
+{
+  handleContinue();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] Continue"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Continue);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Continue);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleStop_MIDI_DEVICE_USB(void)
+{
+  handleStop();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] Stop"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::Stop);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::Stop);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleActiveSensing_MIDI_DEVICE_USB(void)
+{
+  handleActiveSensing();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] ActiveSensing"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::ActiveSensing);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::ActiveSensing);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+
+void handleSystemReset_MIDI_DEVICE_USB(void)
+{
+  handleSystemReset();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] SystemReset"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(midi::SystemReset);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(midi::SystemReset);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+void handleRealTimeSystem_MIDI_DEVICE_USB(byte inRealTime)
+{
+  handleRealTimeSystem();
+#ifdef DEBUG
+  Serial.print(F("[MIDI_USB] RealTimeSystem"));
+#endif
+#ifdef MIDI_MERGE_THRU
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.sendRealTime(inRealTime);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_DIN"));
+#endif
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  midi_usb.sendRealTime(inRealTime);
+#ifdef DEBUG
+  Serial.print(F(" THRU->MIDI_USB_HOST"));
+#endif
+#endif
+#ifdef DEBUG
+  Serial.println();
+#endif
+#endif
+}
+#endif // MIDI_DEVICE_USB
+
+/*****************************************
+   HELPER FUCNTIONS
+ *****************************************/
+void setup_midi_devices(void)
+{
+#ifdef MIDI_DEVICE_DIN
+  // Start serial MIDI
+  midi_serial.begin(DEFAULT_MIDI_CHANNEL);
+  midi_serial.setHandleNoteOn(handleNoteOn_MIDI_DEVICE_DIN);
+  midi_serial.setHandleNoteOff(handleNoteOff_MIDI_DEVICE_DIN);
+  midi_serial.setHandleControlChange(handleControlChange_MIDI_DEVICE_DIN);
+  midi_serial.setHandleAfterTouchChannel(handleAfterTouch_MIDI_DEVICE_DIN);
+  midi_serial.setHandlePitchBend(handlePitchBend_MIDI_DEVICE_DIN);
+  midi_serial.setHandleProgramChange(handleProgramChange_MIDI_DEVICE_DIN);
+  midi_serial.setHandleSystemExclusive(handleSystemExclusive_MIDI_DEVICE_DIN);
+  midi_serial.setHandleSystemExclusiveChunk(handleSystemExclusiveChunk_MIDI_DEVICE_DIN);
+  midi_serial.setHandleTimeCodeQuarterFrame(handleTimeCodeQuarterFrame_MIDI_DEVICE_DIN);
+  midi_serial.setHandleAfterTouchPoly(handleAfterTouchPoly_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleSongSelect(handleSongSelect_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleTuneRequest(handleTuneRequest_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleClock(handleClock_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleStart(handleStart_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleContinue(handleContinue_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleStop(handleStop_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleActiveSensing(handleActiveSensing_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleSystemReset(handleSystemReset_MIDI_DEVICE_DIN);
+  midi_Serial.setHandleRealTimeSystem(handleRealTimeSystem_MIDI_DEVICE_DIN);
+  Serial.println(F("MIDI_DEVICE_DIN enabled"));
+#endif
+
+  // start up USB host
+#ifdef MIDI_DEVICE_DIN
+  usb_host.begin();
+  midi_usb.setHandleNoteOn(handleNoteOn_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleNoteOff(handleNoteOff_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleControlChange(handleControlChange_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleAfterTouchChannel(handleAfterTouch_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandlePitchBend(handlePitchBend_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleProgramChange(handleProgramChange_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleSystemExclusive(handleSystemExclusive_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleSystemExclusiveChunk(handleSystemExclusiveChunk_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleTimeCodeQuarterFrame(handleTimeCodeQuarterFrame_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleAfterTouchPoly(handleAfterTouchPoly_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleSongSelect(handleSongSelect_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleTuneRequest(handleTuneRequest_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleClock(handleClock_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleStart(handleStart_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleContinue(handleContinue_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleStop(handleStop_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleActiveSensing(handleActiveSensing_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleSystemReset(handleSystemReset_MIDI_DEVICE_USB_HOST);
+  midi_usb.setHandleRealTimeSystem(handleRealTimeSystem_MIDI_DEVICE_USB_HOST);
+  Serial.println(F("MIDI_DEVICE_USB_HOST enabled."));
+#endif
+
+  // check for onboard USB-MIDI
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.begin();
+  midi_onboard_usb.setHandleNoteOn(handleNoteOn_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleNoteOff(handleNoteOff_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleControlChange(handleControlChange_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleAfterTouchChannel(handleAfterTouch_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandlePitchBend(handlePitchBend_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleProgramChange(handleProgramChange_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleSystemExclusive(handleSystemExclusive_MIDI_DEVICE_USB);
+  //midi_onboard_usb.setHandleSystemExclusiveChunk(handleSystemExclusiveChunk_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleTimeCodeQuarterFrame(handleTimeCodeQuarterFrame_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleAfterTouchPoly(handleAfterTouchPoly_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleSongSelect(handleSongSelect_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleTuneRequest(handleTuneRequest_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleClock(handleClock_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleStart(handleStart_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleContinue(handleContinue_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleStop(handleStop_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleActiveSensing(handleActiveSensing_MIDI_DEVICE_USB);
+  midi_onboard_usb.setHandleSystemReset(handleSystemReset_MIDI_DEVICE_USB);
+  //midi_onboard_usb.setHandleRealTimeSystem(handleRealTimeSystem_MIDI_DEVICE_USB);
+  Serial.println(F("MIDI_DEVICE_USB enabled."));
+#endif
+}
+
+void check_midi_devices(void)
+{
+#ifdef MIDI_DEVICE_DIN
+  midi_serial.read();
+#endif
+#ifdef MIDI_DEVICE_USB_HOST
+  usb_host.Task();
+  midi_usb.read();
+#endif
+#ifdef MIDI_DEVICE_USB
+  midi_onboard_usb.read();
+#endif
+}
+#endif // MIDI_DEVICES_H