UPDATE: It appears that the purchase of this subscription may also include access to YouTube Red & YouTube Music! (Thanks Patty & Kristyn!)
For a limited time, Google Play is offering up a discount on a Google Play Music Subscription —> Score a 1-Month Subscription for $4.99,
3-Month Subscription for $14.98 or a 6-Month Subscription for $29.97. Google Play Music gives you access to millions of songs – on-demand and ad-free.