Original two-note technical exercises authored for MIDI Viewer. You may use and redistribute these demonstration MIDI files. 480 PPQ; notes C4 then E4, each 480 ticks. Constant/default: 120 BPM, 1 second. Changing/delayed: 120 then 60 BPM at tick 480, 1.5 seconds. Type 0/1 pair has the same performance in different track layouts. Not third-party compositions.