file: ./testdata/ceottk.mid
file format: SMF1 (multitrack)
number of tracks: 2
time format: 480 MetricTicks
===========
channel.NoteOn channel 1 key 79 velocity 81
channel.ProgramChange channel 1 program 19
channel.NoteOn channel 1 key 81 velocity 81
channel.NoteOff channel 1 key 79
channel.NoteOn channel 1 key 77 velocity 81
channel.NoteOff channel 1 key 81
channel.NoteOn channel 1 key 65 velocity 81
channel.NoteOff channel 1 key 77
channel.NoteOn channel 1 key 72 velocity 81
channel.NoteOff channel 1 key 65
channel.NoteOff channel 1 key 72