This early archive concert of Peter Green's Fleetwood Mac, before Danny Kirwan, is one of the earliest existing live recordings of the band, recorded on April 27, 1968 at a concert given at the Polytechnic of Central London, just a few months after the release of their debut album.

Here the band's heavy blues influence dominates their sound as they play through a set of mainly blues covers, many of which do not appear on any other recording.