SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Super Sound - Super Sound is a resourceful audio and music editor.
Splice - Music creation, collaboration, and sharing made simple.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
n-Track Studio - Audio recording and music creation app for iOS.
Audio Video Editor and Mixer - Audio Video Editor and Mixer is a tool that helps you add changes to your video and audio files.