Music stills playing after turned it's volume to 0, and when quiting from a world

Steps to reproduce:
1. Wait for a music
2. Turn it's volume to 0 (Nothing will happen)
3. Turn the master volume to 0 (The music seems stopped)
4. Turn the master volume up (And voila, the music stills playing)
5. Quit from the world (The music stills playing)

It's annoying.