iphone music turns on by itself

There is a "ghost in the machine", call the Police!
Seriously though, I frequently return to find my new iPhone 5 playing songs. It's often sitting quietly alone untouched on a table or dresser, and then it decides we all need to hear the Modern Jazz Quartet or Freddie Mercury. I hit pause, I scold Siri, I I double click the button and close out the music button, I reboot...and we are good. Then sometimes ten minutes later, sometimes a few hours later, it sounds like there is a flash mob to Gangnam Style happening in the other room.

I am hoping this is a settings issue, not a software bug. Does anyone have suggestions for putting my iPhone's flash mobs to rest? I could delete all of my music, buy a new Ipod to keep my music and phone relationships secret from one another, but I am trying to show my first smart phone the love it deserves.

Truly appreciate the tips, tricks and fancy dance moves. 🙂

~Cindy