Ever since Space Mountain got refurbished, I have never ridden it without the music. But, I remember when I was young, the old Space Mountain's music rarely worked and you could barely hear it. It also used to have a little red light on the back so you could tell whether on not the music is working. Does the new Space Mountain have any of those? As for California Screamin' the audio always has new settings. Sometimes it's off, and when it's on, it is either soft, loud, or like a moving boom box that is so loud you could hear the bass line everywhere. And the trains vibrate.