Suto - Get one-on-one expert product recommendations.
Sayonara Player - Sayonara is a simple but nice audio player and holds a lot of features like a library, id3 tag...
Operator - Looking for something? Make a request and we'll find it.
Pi MusicBox - Pi MusicBox is a great music platform where you can create songs and is the only streaming music player for Spotify, Google Music, Podcasts, SoundCloud, Webradio, and others.
Likewise - Get recommendations you love, from people you know.
GNOME Music - Music is the new GNOME music playing application.