mute sounds for all scenes ?

Hello, I finished the tutorial of creating the first game of asteroids, it is working perfectly but, I want to start implementing altetions and leave more with my face :-D, then:

Create a button to disable background sound (mute), adjust the overall volume of the game. I already created a mute button, but, it only works in the current scene and if you move to another scene the sound enables again.

I already add thanks for the help of everyone.