I have a google nexus 5 which is a year old. I had no issues with it until recently, from around 3 days ago.
Music started playing suddenly from nowhere. It's not from the music player, and it doesn't show any notification, either. I can't even stop the music as I couldn't find out from where it is started playing. I had to turn off my phone to get it to stop.
What can I do to stop this from happening?