MThd `MTrk X / MTrk MIDI out @ d @ e d @ d @ 4 e d @ d @ 4 e d @ d @ 4`9P 9P @P DP_9 9 @ D 9P 9P ?P CP_9 9 ? C 9P 9P ?P BP_9 9 ? B 8P :P =P AP_8 : = A :P =P AP DP_: = A D 8P =P_8 = a6P :P =P AP_6 : = A 6P :P =P AP_6 : = A 6P :P