Blues Jam In Chicago Vol. 1 & 2 was the result of a recording session with Fleetwood Mac in early 1969 at Chess Records in Chicago, home to Muddy Waters and Howlin' Wolf, amongst others. Then a young British blues band, Peter Green, John McVie, guitarists Danny Kirwan and Jeremy Spencer and Mick Fleetwood jammed with a number of famous Chicago Blues artists from whom they drew inspiration. Since the Peter Green-led Fleetwood Mac was so directly influenced by Chicago blues, the session acts as a kind of stylistic homecoming for the band.