BeatStars - BeatStars is a social music marketplace & distribution co.
ChordIQ - Learn notes, chords, sight reading, perfect pitch and more.
Music Speed Changer (Classic) - Music Speed Changer (Classic) is an amazing mobile app that enables you to adjust the pitch and tempo of your music to make it slower or faster through sound touch processor.
7Pad Scales and chords - Music instrument and assistant for playing scales and chords.
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
muted.io - A magical collection of interactive music theory tools & visual reference pages for musicians and music producers