Synthesia - A fun way to learn how to play the piano.
SampleTank - THE MASTER-QUALITY MIDI SOUND MODULE AND GROOVE WORKSTATION FOR THE MOBILE ARTIST.
Playground Sessions - Online piano learning game.
Jokosher - Jokosher is a simple and powerful multi-track studio.
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.
Fission - Edit audio in minutes, not hours.