AT&T is sweetening the deal on its Unlimited & More Premium plan this week, with the addition of free Spotify Premium. That amounts to a $10-a-month savings for those paying the $80 a month for the wireless service. The plan offers one of seven free partner services, including HBO, Cinemax, Showtime, Starz, VRV, Pandora and now Spotify .

There’s fine print, because of course there is. The deal applies specifically to the Unlimited & More Premium plan, while other AT&T subscribers can get a six-month trial of Premium for free. After that time, things revert to the regular price.

Existing Spotify Premium subscribers, meanwhile, can keep their account but get the service for free by signing up on all of the proper places on AT&T’s site.

The deal mirrors a similar partnership between Verizon and Apple Music, the services’ largest competitors, respectively. AT&T is currently the U.S.’s largest carrier by a slight edge. Spotify, meanwhile, continues to have a sizable advantage in paid subscriber numbers at more than 100 million to Apple’s 60 million.