Was working great until last week when it stops playing songs, seems to go back to the beginning of the song I just heard, and sit there, unresponsive to play/pause commands. Seems to happen on cell signal and not on wifi, but I can back out and immediately play another, unanticipated, undownloaded song reliably so its def not my signal/carrier. I'll give them another week or so to fix and then cancel my premium subscription till they get their $&*@ together.