Brain.fm - Music designed for the brain to enhance focus, relaxation, meditation, naps and sleep within 10 - 15 minutes of use.
SoundCloud - Enjoy music & follow favourite artists
Annie Music - The easiest way to share good music
Spotify - Map shows when two people play same song at same time
humit - A social networking app for music sharing and discovery.
SoundClick - SoundClick is a music-based social community.