http://www.youtube.com/watch?v=q98wuK_tTCs

28 seconds in, been trying to find it for ages. When the ska symbol pops up

It aint on the mean machine or lock stock albums (it was on the lock stock flim)

Ive posted it on loads of forums and noone can work out what it is.

Are you sure its a song and not just a piece of music written for that moment?