How to play the same music in all scenes

Does anyone knows how to play the same music in all scenes? Or anyone could send me a file example? Please I really need it. I need to how to make a global music that continues playing of my choosen scenes.

How do you want it to be, to play the music in one scene and for the next one to have it or for you to change the scene and continue and not start from the beginning?

Play the music once and enable keep music between scenes in scene properties.