diff --git a/android/.classpath b/android/.classpath
index c247676..a607c7f 100644
--- a/android/.classpath
+++ b/android/.classpath
@@ -6,6 +6,7 @@
 	<classpathentry excluding="**/.svn/*" kind="src" path="test"/>
 	<classpathentry kind="src" path="gen"/>
 	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
-	<classpathentry kind="lib" path="core-lib/libprotobuf.jar"/>
-	<classpathentry kind="output" path="bin"/>
+	<classpathentry exported="true" kind="lib" path="core-lib/libprotobuf.jar"/>
+	<classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
+	<classpathentry kind="output" path="bin/classes"/>
 </classpath>
diff --git a/android/.project b/android/.project
index 7be155a..6c6f44d 100644
--- a/android/.project
+++ b/android/.project
@@ -15,6 +15,16 @@
 				</dictionary>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.ui.externaltools.ExternalToolBuilder</name>
+			<triggers>auto,full,incremental,</triggers>
+			<arguments>
+				<dictionary>
+					<key>LaunchConfigHandle</key>
+					<value>&lt;project&gt;/.externalToolBuilders/NDK Builder.launch</value>
+				</dictionary>
+			</arguments>
+		</buildCommand>
 		<buildCommand>
 			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
 			<arguments>
diff --git a/android/AndroidManifest.xml b/android/AndroidManifest.xml
index 7e98da2..96edba4 100644
--- a/android/AndroidManifest.xml
+++ b/android/AndroidManifest.xml
@@ -4,11 +4,11 @@
     package="com.google.synthesizer"
     android:versionCode="2"
     android:versionName="0.9">
-  <uses-sdk android:minSdkVersion="8" /> <!-- 8 = Froyo 2.2 -->
+  <uses-sdk android:minSdkVersion="9" /> <!-- 8 = Froyo 2.2 -->
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
   <application android:icon="@drawable/icon" android:label="@string/app_name">
     <activity
-        android:name=".android.ui.PianoActivity"
+        android:name=".android.ui.PianoActivity2"
         android:label="@string/app_name"
         android:screenOrientation="landscape">
       <intent-filter>
@@ -64,10 +64,12 @@
         android:name=".android.ui.KarplusStrongActivity"
         android:label="@string/karplus_strong"
         android:screenOrientation="landscape" />
+    <!-- Don't need the service if we're running native sound engine
     <service android:name=".android.service.SynthesizerService">
       <intent-filter>
         <action android:name=".android.service.ISynthesizerService" />
       </intent-filter>
     </service>
+    -->
   </application>
-</manifest>
\ No newline at end of file
+</manifest>
diff --git a/android/default.properties b/android/default.properties
index e2e8061..4686f7f 100644
--- a/android/default.properties
+++ b/android/default.properties
@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-8
+target=android-9
diff --git a/android/jni/Android.mk b/android/jni/Android.mk
index 249e1df..51f5e08 100644
--- a/android/jni/Android.mk
+++ b/android/jni/Android.mk
@@ -3,7 +3,8 @@ LOCAL_PATH := $(call my-dir)/../../cpp/src
 include $(CLEAR_VARS)
 LOCAL_MODULE := synth
 LOCAL_CPP_EXTENSION := .cc
-LOCAL_SRC_FILES := dx7note.cc \
+LOCAL_SRC_FILES := android_glue.cc \
+                   dx7note.cc \
                    env.cc \
                    fm_core.cc \
                    fm_op_kernel.cc \
@@ -14,5 +15,12 @@ LOCAL_SRC_FILES := dx7note.cc \
                    sin.cc \
                    synth_unit.cc
 
+# for native audio
+LOCAL_LDLIBS    += -lOpenSLES
+# for logging
+LOCAL_LDLIBS    += -llog
+
+LOCAL_CFLAGS := -O3
+
 include $(BUILD_SHARED_LIBRARY)
 
diff --git a/android/jni/Application.mk b/android/jni/Application.mk
index caf3b26..eab2761 100644
--- a/android/jni/Application.mk
+++ b/android/jni/Application.mk
@@ -1 +1,3 @@
 APP_STL := stlport_static
+APP_ABI := armeabi-v7a
+
diff --git a/android/src/com/google/synthesizer/android/widgets/piano/PianoView.java b/android/src/com/google/synthesizer/android/widgets/piano/PianoView.java
index b397e93..0099ffb 100644
--- a/android/src/com/google/synthesizer/android/widgets/piano/PianoView.java
+++ b/android/src/com/google/synthesizer/android/widgets/piano/PianoView.java
@@ -16,6 +16,9 @@
 
 package com.google.synthesizer.android.widgets.piano;
 
+import java.util.HashMap;
+import java.util.Map;
+
 import android.content.Context;
 import android.content.res.TypedArray;
 import android.graphics.Canvas;
@@ -23,8 +26,11 @@ import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
+
 import com.google.synthesizer.R;
+import com.google.synthesizer.android.AndroidGlue;
 import com.google.synthesizer.core.model.composite.MultiChannelSynthesizer;
+import com.google.synthesizer.core.music.Note;
 
 /**
  * PianoView is a UI widget that simulates a music keyboard.
@@ -350,6 +356,32 @@ public class PianoView extends View {
     });
   }
 
+  /**
+   * Connects the PianoView to an AndroidGlue. This should probably be a MidiListener instead,
+   * though...
+   */
+  public void bindTo(final AndroidGlue midiSink) {
+    this.setPianoViewListener(new PianoViewListener() {
+      {
+        fingerMap_ = new HashMap<Integer, Integer>();
+      }
+      public void noteDown(double logFrequency, int finger, boolean retriggerIfOn) {
+        noteUp(finger);
+        int midiNote = Note.getKeyforLog12TET(logFrequency);
+        fingerMap_.put(finger, midiNote);
+        midiSink.sendMidi(new byte[] {(byte) 0x90, (byte) midiNote, 64});
+      }
+      public void noteUp(int finger) {
+        if (fingerMap_.containsKey(finger)) {
+          int midiNote = fingerMap_.get(finger);
+          fingerMap_.remove(finger);
+          midiSink.sendMidi(new byte[] {(byte) 0x80, (byte) midiNote, 64});
+        }
+      }
+      private Map<Integer, Integer> fingerMap_;
+    });
+  }
+
   // The most recent screen rect that this keyboard was drawn into.
   //
   // This is basically a stack variable for onDraw.  It's a member variable only so that we can
diff --git a/cpp/src/android_glue.cc b/cpp/src/android_glue.cc
index a1e4505..97d1a8e 100644
--- a/cpp/src/android_glue.cc
+++ b/cpp/src/android_glue.cc
@@ -47,13 +47,6 @@ extern "C" void BqPlayerCallback(SLAndroidSimpleBufferQueueItf queueItf,
   cur_buffer = (cur_buffer + 1) % N_BUFFERS;
 }
 
-extern "C" JNIEXPORT jint JNICALL
-Java_com_google_synthesizer_android_AndroidGlue_hello(JNIEnv *env,
-    jobject thiz) {
-  LOGI("here %d!", 42);
-  return 42;
-}
-
 void CreateEngine() {
   SLresult result;
   result = slCreateEngine(&engineObject, 0, NULL, 0, NULL, NULL);