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_data[4][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,

                          };
uint8_t seq_vel[4][16] = {128, 0,  0, 0, 108, 0,  0, 33, 117, 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,
                          85, 45, 87, 27, 2, 6, 5, 37, 7, 45, 33, 37, 5, 35, 2, 27,
                         };

//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
//};