It introduced Peter Green on lead guitar following the departure of Eric Clapton, and also featured John McVie on bass, Aynsley Dunbar on drums and John Almond on saxophone.

Tracks 5, 7 and 13 feature the horn section of Alan Skidmore and Ray Warleigh.

The cover art and the original LP sleeve design are by Mayall.

It was voted number 638 in the third edition of Colin Larkin's All Time Top 1000 Albums (2000).

[12] 1–14 Original album tracks (as above) The additional material is: Disc 1 – 15 from Raw Blues; 16–19 from the John Mayall's Bluesbreakers with Paul Butterfield EP Disc 2 – 1–3 and 13–16 from Looking Back; 4–7 and 9–12 from Thru the Years; 8 from the B-side of "Curly" single; 17 from Blues from Laurel Canyon 1–14 Original album tracks (as above) The previously unreleased tracks 15–16, 23 from Looking Back; 17–18, 24 from Thru the Years, Decca SKL 5086; 19–22 are from the John Mayall's Bluesbreakers with Paul Butterfield EP, Decca DFE 8673; 25–28 are from BBC Light Programme Saturday Club session recorded 23 January 1967 Original album[1] with: 2003 expanded edition[13] Same as above with the addition of: Production