This is one of the first ever live recordings of Fleetwood Mac, back when they were mainly the blues, along with Cream, Alexis Korner, early Black Sabbath, and John Mayall (Mac is basically a Bluesbreakers spinoff). It was a different animal from the lineup you can now hear on the oldies station. This album is mainly blues covers, including one of Elmore James, an early influence on Peter Green. Some of these were never done in the studio by the band, so this is one for the hardcore fans.
The sound quality is not all that great, like the others said, but this was forty years ago, and they also probably didn't have a large budget for what would be hi-tech for that day. Maybe this was recorded for release but maybe Blue Horizon didn't think they were ready for their own live release (though they shared a couple with other blues acts).
The cover is from 1970 with Danny Kirwan, but he didn't join the band until a few months after this show.
This album has been reissued a number of times, with different covers and names, and is usually a budget item like this. This is more of a gray area release. It's not a bootleg, yet it's apparently not an official release either approved by the band.
