Apple Thoughts: Interested in Google Music Beta? Here is How to Get it on Your iOS Device

"Google Music Beta launched yesterday, beating iTunes into the cloud by at least a couple months, but with one big drawback: it wasn't supposed to work on iOS devices, but just one day later and Google Music is already up and running on iPhone, iPod Touch and iPad."

Basically it works much the same way the Amazon.com Cloud Player works, that is you have to access via mobile web versus an application. You sign up for your invite here, and then once you have it you open Safari and go to the Google Music site. Pretty simple.