They were a cool British Blues band with a few minor hits (Peter Green wrote "Black Magic Woman," which they recorded before Santana), until they went to L.A. to see what's what; when Mick Fleetwood heard Stevie Nicks & Lindsay Buckingham's recordings (which the owner of the studio used to DEMO the sound quality), he brought them into the band - and they became one of the biggest bands in all of Rock!