EXPIRED Google Play Music Subscription 3 Months Free (New Users Only)
Free music for 3 months is a nice way to start the weekend. You'll need to put your payment details in and you'll be charged after the 3 months period if you don't cancel your subscription. I've set a reminder on my calendar a few days before the free trial ends. Sometimes services like this will allow you to cancel your subscription immediately and let you use your free trial but I'm not taking the risk. Enjoy!
More info: I'm getting reports that it's working for some existing users as well so give it a go.