Can a musical note really set off a bomb?

This is random & probably not exactly p.c. but is it actually possible that a musical note can trigger a bomb? I've watched both the movies Eagle Eye & Get Smart and in both films, the villain plants a bomb (at a concert) which will be detonated when a certain note is hit at the end of the song. Does it have something to do with frequency? I don't really know but I'm just curious =]