Why is my phone playing a random tune thats not in my music player?

[Android Central Question]

So for the last couple days, my phone will randomly play this strange tune thats not even in my music player, all apps will be closed and it seems I have to restart my phone for it to stop. It always happens in the wee hours of the night. Does anyone know why it's doing this and what I can do to stop it? I've looked through my files and don't see anything that matches the tune. Just very strange and annoying..

 

[B. Diddy]

See this similar thread: https://forums.androidcentral.com/a...nown-music-playing-wont-stop.html#post6047899. Thread closed to prevent parallel discussions.