I am just happen to be one of those who just a die hard fan of Google and like to use this new tool. Since I am outside US I am pretty out of luck.
Well many have shared to use proxy VPN to hide your location to US. I did lots of search, tried lots of VPN clients and eventually the only one that works for me was Security Kiss.
Its very easy to use and just try out some of the available servers. Just have to make sure its either US or UK and test it out with some website. If it works, the server is working. You might just need to play around to make sure.
Before you head to the Google Play Store to do your activation for the Google Music Manager, you would need to do something first which none of the site mention. You need a US address. Yes so you can use any of the delivery hub e.g. ComsGateway, Borderlinx, etc.
Next use the US address and add your billing address for Google Play Store in Google Wallet. You can use your own Credit Card but make sure the billing address is in the States.
Next is to go to Google music via https://play.google.com/music/listen. You will just have to agree to the agreement and you will be able to download the Google Music Player. Once completed, you are free to disconnect that VPN.
You will now be able to enjoy Google Music and upload your music online and access it anywhere anytime.
You will be also be able to access the free music in the Google Music Store.
Just in case you are into US TV shows, you can actually use this VPN to watch those shows.