Spotify - Map shows when two people play same song at same time
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Deezer - Deezer is a music streaming app created in France. It is available in 180 counties and gets 16 million users a month. 6 million of the users have paid subscriptions. Read more about Deezer.
Splice - Music creation, collaboration, and sharing made simple.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
G-Stomper Studio - G-Stomper Studio is a feature-packed, mobile music production tool.