Heartbeat - Listen to music with your friends together, on Spotify
JamBuddy - Find and collaborate with musicians around you thru Spotify
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
tuneX - Like tinder but for music creators
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
Kindreds - An app for musicians that want to meet jam buddies