Is there an Ubuntu app that connects to, plays, and/or manages Google Music?

I'm looking for a program that I can use for Google Music on my Ubuntu Desktop, that might integrate with Unity, and be controlled by media keys. I'm sure I might be most likely to see a webapp for it soon, but I've been getting frustrated with webapps since I use Chrome (not Chromium).

I found a question/answer similar to this here, but I'm looking for something more out-of-the-box than extending Rhythmbox.


Nuvola Player

It integrates with Unity, you can use media keys, and it currently supports Google Play, Amazon Cloud Player, Deezer, Pandora Radio, and Rdio.