Lower or fade sound in android

I'm making a simple trivia game, and running a looping ~1 min mp3 file when the user arrives at the main menu. The sound is set to stop when user clicks any of the buttons on the menu (i.e. Play Game).

My problem is that when the sound stops, its kind of a jarring cut off. Rather than do .pause() or .stop(), is there a way to make the sound slowly fade out after a button is pressed?

Thanks