Soor - Discover music a lot better on Apple Music
Spotify - Map shows when two people play same song at same time
humit - A social networking app for music sharing and discovery.
SoundCloud - Enjoy music & follow favourite artists
MTME - A new way to discover music
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