I've had this phone for about 2 months and as of a couple weeks ago it will occasionally start playing a very bizarre tune. It's the same song every time it sounds kind of like a kitchy ringtone or something. It's got a bit of an electro-calypso feel to it. It will keep playing even when all of the apps are closed. I can turn the volume down and it will go with that but the only way to truly turn it off is to restart the phone. It's a very strange problem I can't seem to find any other instances of it online.