Библиотека для MIDI

Библиотека для работы с  MIDI
https://code.google.com/p/android-midi-lib/

... for use with Android applications that do not have access to Java's javax.sound.midi library. However, it is a stand-alone Java library with no Android-specific dependencies or considerations.
This code provides an interface to read, manipulate, and write MIDI files. "Playback" is supported as a real-time event dispatch system. This library does NOT include actual audio playback or device interfacing.