uint8_t seq_active_track = 0;
uint8_t seq_menu;
bool seq_button_r = false;
bool seq_noteoffsent = false;
elapsedMillis seq_millis_timer;
uint8_t seq_step_timer = 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_chain_select_menu;
uint8_t seq_chain_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;
uint8_t seq_data[10][16] = {72, 0,  0, 0, 72, 0,  0, 72, 72, 0,  0, 0, 72, 0,  0, 0,
                           0, 0,  0, 0, 75, 0,  0, 0, 0, 0,  0, 0, 75, 0,  0, 0,
                           78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78, 78,
                           45, 45, 57, 57, 45, 45, 57, 57, 45, 45, 57, 57, 45, 45, 57, 57,
                           41, 41+12, 53, 53, 41+12, 41, 53, 53, 41, 41+12, 53, 53, 41, 41, 53, 53,
                           43+12, 43, 55, 55, 43, 43, 55+12, 55, 43, 43, 55, 55, 43, 43, 55, 55,
                           45, 45, 57, 57, 45, 45, 57, 57, 45, 45, 57, 57, 45, 45, 57, 57,
                           72, 72,  72, 72, 72, 0,  0, 72, 72, 0,  0, 0, 72, 0,  0, 0,
                           50, 50,  0, 0, 75, 0,  0, 50, 50, 50,  50, 50, 75, 75,  75, 75,
                           72, 0,  0, 0, 72, 0,  0, 72, 72, 0,  0, 0, 72, 0,  0, 0
                          };
uint8_t seq_vel[10][16] = {80, 0,  0, 0, 80, 0,  0, 33, 80, 0,  0, 0, 109, 0,  0, 0,
                          0, 0,  0, 0, 55, 0,  0, 0, 0, 0,  0, 0, 65, 0,  0, 0,
                          78, 58, 88, 48, 78, 38, 78, 78, 68, 48, 68, 48, 88, 48, 78, 48,
                          55, 45, 87, 27, 2, 6, 5, 37, 7, 45, 33, 37, 5, 35, 2, 27,
                          55, 45, 77, 27, 12, 6, 15, 37, 7, 45, 43, 27, 15, 35, 2, 17,
                          55, 75, 87, 27, 2, 16, 5, 37, 7, 45, 33, 37, 5, 35, 2, 27,
                          65, 75, 87, 27, 2, 16, 5, 37, 7, 45, 33, 37, 5, 35, 2, 27,
                          44,55,66,55,80,90,90,77,80,90,90,90,80,128,128,128,
                          55,33,128,55,55,128,11,11,22,33,44,55,55,44,33,22,
                          80, 0,  0, 0, 80, 0,  0, 33, 80, 0,  0, 0, 80, 0,  0, 0
                         };

//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
//                            };

uint8_t seq_patternchain[4][4] = { 0, 1, 2, 3,
                                   0, 1, 2, 6,
                                   0, 1, 2, 4,
                                   7, 8, 2, 5
                                 };