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| MIDI Mixup is an interactive toy that takes three MIDI files as input
and processes them to produce another MIDI file.  You can specify the
input files by selecting a
collection from which a random file will be chosen.
The pitch, channel, time, and duration of the notes in the three input files
is then used to make a single new output file. 
 The algorithm for MIDI Mixup is written in KeyKit, and here's the source code. 
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