CrowdPlay is a digital democratic music player, that lets users attend a "party" with a playlist. Users can add music to the playlist from Spotify's library. The playlist has a voting feature. To create a party and play music you must own a Spotify Premium account. As a guest, attending a party, you can add music from your own music library on Spotify - playlists, saved music etc. All users must log in with Facebook to use the app.