Heartbeat - Listen to music with your friends together, on Spotify
TSDJ (Twenty Second DJ) - Make a playlist w/ friends in 20 seconds.
Festify - Festify is a free Spotify-powered app that lets your guests choose which music should be played...
Join My Playlist - Listen to music live together with your friends in Spotify.
Jelly Party - Watch anything together.
dubtrack.fm - Dubtrack.fm is a social DJ site where users can share and discover the latest and greatest by...