82 minutes of boom bap old school rap
Shhh. Just press play. It's by 2tall, DJ Clockwork and Kper. You will not be disappointed (assuming, that is, you like this sort of thing). [soundcloud url="http://soundcloud.com/aboombapcontinuum/a-boom-bap-continuum-mixtape-beats-from-1999-2009"]
Original link - with downloads, full artwork and stuff - here. (nice spot Bob!)