SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Keezy Drummer - Make a beat in seconds
Splice - Music creation, collaboration, and sharing made simple.
Radium - Radium is a music editor with a new type of interface.
n-Track Studio - Audio recording and music creation app for iOS.
BlokDust - Join blocks together to build sounds with this web-based music making app.