Are you approaching retirement age?
That is hideous! Why would you put something so beautiful inside something so nasty?!
Problem I have with Google Music is that it doesn't support standard star ratings. My entire library is rated and it took me long enough to find GoneMAD Music Player which also supports it, so now I have custom filters set up to play songs around the library that are only rated 5 star, 4 star, 3 and above etc.
It's the same way I have MusicBee set up on the PC.
I know scrobbling to LastFM works as I only have to install the LastFM app to scrobble via Google music on both the car stereo and the phone or Firefox extension, but without ratings support and advanced library controls that separate software seems to have, it's no use to me.
Shame because Google music in the car would be great and convenient as it gets 3G/4G from the phone anyway so always has data in most cases.