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