uint8_t seq_active_track = 0;
uint8_t seq_menu;
bool seq_button_r = false;
bool seq_noteoffsent[4] = {false, false, false, false};
elapsedMillis seq_millis_timer;
uint8_t seq_step = 0;
uint32_t seq_timer_previous = 0;
bool seq_running = false;
bool seq_recording = false;
uint8_t seq_note_in;
uint8_t seq_note_in_velocity;
int seq_transpose;
uint8_t seq_inst_dexed[4] = { 1, 1, 1, 1  };
uint8_t seq_chord_dexed_inst = 0;
uint8_t seq_chord_velocity = 50;
uint8_t arp_style = 0; // up, down, up&down, random
uint8_t seq_chords[6][4] = { 4, 7, 12, 0,  //major
                             3, 7, 12, 0,  //minor
                             4, 7, 10, 12, //seventh
                             4, 8, 12, 0,  //augmented
                             3, 6, 12, 0,  //dim
                             4, 7, 11 , 0  //maj7,
                           };
char seq_chord_names[6][4] = {  'M', 'a', 'j', ' ' , //major
                                'M', 'i', 'n', ' ' ,
                                's', 'e', 'v', ' ' ,
                                'a', 'u', 'g', ' ' ,
                                'd', 'i', 'm', ' ' ,
                                'M', 'a', 'j', '7' ,
                             };


char arp_style_names[4][3] = {  'u', 'p', ' ',
                                'd', 'w', 'n',
                                'u', '&', 'd',
                                'R', 'N', 'D',
                             };
int seq_tempo_ms = 147;
int seq_bpm = 102;
uint8_t seq_temp_select_menu;
uint8_t seq_temp_active_menu = 99;
uint8_t seq_chain_active_chainstep;
uint8_t seq_chain_lenght = 3; // 0 = 16 steps, 1 = 32 Steps, 2 = 46 Steps, 3 = 64 Steps
uint8_t seq_chain_active_step = 0;
uint8_t seq_prev_note[4]; // note_offs for every (instr.) track
uint8_t seq_prev_vel[4];
uint8_t arp_step;
uint8_t arp_note;
uint8_t arp_chord;
uint8_t arp_note_prev;
uint8_t arp_octave;
uint8_t arp_prev_oct;
uint8_t arp_speed = 0;
uint8_t arp_counter = 0;
uint8_t arp_oct_usersetting = 1;
uint8_t seq_data[10][16] = {72 , 0  , 0  , 0  , 72 , 0  , 0  , 0  , 72 , 0  , 0  , 0  , 72 , 0  , 0  , 0  ,
                            78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 , 78 ,
                            72 , 0  , 0  , 0  , 72 , 0  , 0  , 0  , 72 , 0  , 0  , 75 , 72 , 0  , 0  , 0  ,
                            60  , 61  , 62  , 63  , 64  , 65  , 66  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  ,
                            0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  ,
                            55 , 0  , 0  , 0  , 0  , 0  , 52 , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  ,
                            57 , 0  , 0  , 0  , 0  , 0  , 53 , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  ,
                            74 , 0  , 0  , 72 , 0  , 0  , 74 , 0  , 0  , 0  , 76 , 0  , 0  , 0  , 0  , 0  ,
                            74 , 0  , 0  , 72 , 0  , 0  , 71 , 0  , 0  , 0  , 67 , 0  , 0  , 0  , 0  , 0  ,
                            69 , 0  , 0  , 76 , 0  , 0  , 69 , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0  , 0

                           };
uint8_t seq_vel[10][16] = {120, 0, 0, 0, 120, 0, 0, 0, 120, 0, 0, 0, 120, 0, 0, 0,
                           105, 80, 105, 70, 106, 98, 106, 70, 126, 97, 106, 70, 106, 99, 90, 65,
                           120, 0, 0, 0, 120, 0, 0, 0, 120, 0, 120, 50, 120, 120, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 200,
                           200, 200, 200, 200, 200, 200, 201, 0, 0, 0, 0, 0, 0, 0, 0, 200,
                           201, 200, 200, 200, 200, 200, 200, 200, 0, 0, 0, 0, 0, 0, 0, 0,
                           98, 120, 0, 88, 120, 0, 127, 120, 0, 0, 125, 120, 0, 0, 0, 0,
                           124, 120, 0, 115, 0, 0, 126, 120, 0, 120, 127, 120, 0, 0, 0, 0,
                           123, 120, 0, 110, 120, 0, 90, 120, 0, 0, 0, 0, 0, 0, 0, 0
                          };

uint8_t seq_patternchain[4][4] = { 0 , 1 , 6 , 9 , 0 , 1 , 5 , 8 , 0 , 1 , 6 , 9 , 2 , 1 , 5 , 7
                                 };
uint8_t seq_content_type[10] = { 0, 0, 0, 0 , 1, 2, 2 , 1 , 1 , 1  }; // 0 = track is Drumtrack, 1= Instrumenttrack, 2= Chord or Arpeggio
uint8_t seq_track_type[4] = { 0, 0, 3, 1 }; // 0 = track is Drumtrack, 1 = Instrumenttrack, 2 = Chord, 3 = Arp

//uint8_t seq_reverb[4][16] = {0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0, 0, 0,  0, 0,
//                             0, 0,  0, 0, 15, 0,  0, 0, 0, 0,  0, 0, 36, 0,  0, 0,
//                             0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//                             0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
//                            };