App closes if it loses focus. If you change to another app and especially if the phone is allowed to lock, as soon as the current song finishes, that's it, music stops. Re-open the app and its back at the home screen and you have to search again for your music. See, even now it's just done it, about 4 tracks into an album, come here to leave this review, music playing as I type but then the track finishes, next track won't play. Got to go back to the home page and select the album again..