Hope this is the correct place to post my question.

You know when you go to the movie theaters and wait for the movie to start? and,they play some sort of soft music when watching the ads? what typ of music is that anyone know? i try to search on google but no luck.

It's called annoying music. :D

Since I'm assuming that your question is serious, your most comprehensive answer, with references, is probably here (http://en.wikipedia.org/wiki/Muzak).

Why is it quick?

ROTFLMAO @ Kal & John.