I've been using Google Music since it came out of Beta, and for the most part, I've been very pleased. Basically, it's a music streaming site that runs on cloud storage. It was cloud storage that I wanted to try, since Stewartland1 is turning 8 years obsolete this May, and Stewartland2 is only slightly younger. Because of this, memory is something of a problem, and I have a lot of music (around 50gigs or so). Thus, the cloud storage.
Google Music merges with your Google account and allows the user to listen to his or her music anywhere they can sign in (as long as flash is supported). That means that if I had a droid phone then I could listen anywhere. That also means that I could listen at work and at home without having thousands of songs taking up hard-drive space. This was my chief reason for signing up, well, that and my infatuation with Google's products.
I've been mostly pleased with my Google Music experience these last few months. The player links to a Google market where you can purchase songs and albums at competitive prices, ranging from FREE to whatever. I've not bought anything above $0.00, but what I've got from here has been good.
The only problems I've encountered have been listening at work. My computer at work is older than Stewartland1 and the internet connection isn't as good, so I get occasional freezes. Still, as long as I'm not doing anything too computationally intense, everything runs smoothly. The only other issue is the randomizer used seems pretty bland, especially when listening to just one artist.
Google Music is not a streaming radio like Pandora, unfortunately, and I think this would be one area Google could improve. Still, if you're on the go and have a droid, using Google Music seems like a smart idea. Or, if you're like me and have limited storage space, it's a no brainer. It does take some time to upload your music, but once it's there it's there for good. Currently you can upload 20,000 songs for free, with pricing starting above and beyond that.