If you have been thinking about trying out Google Play Music Unlimited, now is your chance! They are currently offering a 4 Month Subscription for free!
Specifics:
Valid for New Subscribers only. You must be signed into your Google account to purchase.
Once your 4-Month trial is over, the monthly rate to continue service is $9.99. You may cancel at any time before your trial end date and still receive the full 4-months of membership benefits without incurring further charges.