With the absence of Spotify on BlackBerry 10, I've been in search of a solid replacement for my music. I'm holding out for Rdio at this point but I recently came across Go Music which is tiding me over just fine for now.
Go Music is a Google Music client that lets you stream all of your music on your BlackBerry 10 device. You can access your entire music library for streaming on the go and even access your playlists offline.
If you're all-in with Google Music or just looking for a good music client on your BlackBerry, Go Music is where it's at - it's simple and just plain works. Keep in mind that it isn't an official Google app and it does have a few bugs, but updates are in the works so don't worry too much if it isn't perfect.
You can grab Go Music now in BlackBerry World for $0.99