T-Mobile is adding six new music services to its “Music Freedom” program, allowing you to stream music from them at 4G E speeds without it counting against your monthly E data limits. Songza, Rdio, AccuRadio, Black anet, Grooveshark, Radio radise are now members of the program. 

The notable exception is ay Music, which was the most-requested choice among T-Mobile subscribers in a recent social poll. 

CEO gere took to Twitter to reassure customers that ‘s music service would soon join others on the magenta network.

#MusicFreedom is about setting A your music free! And we’re on our way there… now 13 streaming services adding @ay Music soon!

— gere (@gere) August 27, 2014

T-Mobile did not specify when this would happen, only saying ay Music is coming “later this year” on its official blog. It is unclear what is causing the holdup, whether it be technical work needed on the T-Mobile network or tied to a potential ay Music/YouTube streaming service revamp.

also recently announced it was acquiring Songza, but has not revealed any plans to shut the service down.

The newest streaming services join Spotify, iHeartRadio, ra, iTunes Radio, Rhapsody, Samsung Milk Music, Slacker Radio as sanctioned T-Mobile Music Freedom members.

The additions are only the latest volley in T-Mobile’s efforts to differentiate itself as the “uncarrier.” This has played out most recently in price wars with Sprint, with each seeking to one-up the other through promotions discounted packages (though not all of them are are good deals).

CEO gere has also been waging his own battles on Twitter, proclaiming T-Mobile will surpass Sprint as the nation’s third-largest carrier, appending many of his tweets with #overtakesprint.