I looked around the forum but couldn't find a thread for JB. When I was in Play Music I switched my option to music "On Device" and I saw a lot of tracks that I don't remember putting on the phone. So I used File Manager to try and find where they were stored but I can't them anywhere. I think these mystery tracks are the ones I played from my synced music, but I want to be sure that they are still in the cloud and my phone isn't downloading them and taking up space. If anyone could help me (either if they know how Play Music works or if they know where the music gets stored) I would be grateful.