Every once in awhile the music app player shows up on my lock screen when i have a pic for my lock screen. This only started happening when iOS 10 came out. I don't listen to music on my phone.
I have the same problem. It is not related headphones, spotify, or listening to music on my phone. I do none of that. I email, text, and reach a few websites for news or weather. Period. It was occurring almost every time my battery got low, and if it happened overnight it would drain my battery down from 100% to 35%. When it doesn't appear, my 100% charge stays at 100% overnight. I got rid of my ringtone apps, and the iTunes app and that seemed to make it go away, but now it is back, and I want that sucker gone!