"For me, singing sad songs often has a way of healing a situation. It gets the hurt out in the open into the light, out of the darkness." - Reba McEntire.

I find removing myself from the situation is the best way to to about escaping music that makes me feel unsafe, uneasy or depressed. Of course, that isn't always possible, which is why I have some ear plugs on me - just in case. What about talking to a teacher? Your school might be able to arrange something to help you get away from the situation. They may even give you permission to use an MP3 player or an iPod to listen to in the cafeteria when distressing music is played.

If you're receiving therapy, talking to your therapist about this may be a good idea, as it can be included in your sessions as a focus for coping skills.

As for Bipolar patients being more prone to the emotions induced by music, it isn't an entirely unreasonable thought. I've had some bouts of mania that have been triggered at least partly by television shows (once ending in a stint on the psych ward) so I dont believe music would be much different.