Is it normal to be this way?

Ok so for about a year now I've been listening to dubstep/techno trance music. And at first I just listened to it bcuz it had good bass and sounded great. But then, it changed. See I have bipolar disorder and when I'm in a depression I put on my headphones. Now when I listen to dubstep it changes my mood. If I'm already depressed then it just makes me more depressed. If I'm happy it can make me depressed. Or really happy. U never really no with me. I guess it's just the way my depression state is at the time and the way the music flows tht does it. Is this normal? Am I alone in my abnormality?