YT do have a habit of removing music vids - however they seem to be fairly capricious about it. Yours could be taken down immediately or stay there forever, far as I can tell. Just a question of if or when they notice it.
Sometimes, they don't remove them but simply disable the music track. I think they're more concerned with the music than anything else. So it would probably depend on which track you used, too, I suspect. Perhaps something older or from an artist not so hot on copyright infringement would slip under the wire and not be noticed as much.
LabRat
