One might be thinking right now: MIDI? Wasn't that what my dad used to listen to music?
However MIDI has proven to be quite adept as a protocol and file format being now 30+ years old with only a few minor revisions. This year some major improvements are being announced with the release of MIDI HD Protocol, which will allow for more control and expressiveness as well as network connectivity and will
be MIDI 1.0 compatible. So in the future you may be able to use your Android phone's touch screen and accelerometer as a MIDI controller.