Heartbeat - Listen to music with your friends together, on Spotify
SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!
keezy - A colorful soundboard. Play with music.