iHeart Radio keeps going on by itself

[iMas70]

I don't know if this is a phone problem or I need a ghost buster. My iHeart Radio app keeps going on by itself. Always when the phone is on my nightstand in the bedroom. It has happened at least 6-7 times over the last few weeks. There has been two times when I plugged it in then started towards the bathroom to get ready for bed. Then heard music. There was a few other times when I heard music playing and tracked it down to the phone. And then last night, I woke up to it playing at 3am. Any ideas?