And Clapton Didn't Even Know

Bruce had a very recognizable voice. SImilar to John Wetton who is another similarly talented bassist musician and vocalist.

Come to think of it I bet John Wetton has played with many star guitarists over teh years as well. But more in teh progressive rock vein than roots/blues.

Marty, McVie is on the cover and on the record: The band on this album includes Mayall on piano, Hammond organ, harmonica and most vocals; bassist John McVie; drummer Hughie Flint; and Clapton. Augmenting the band on this album was a horn section added during post-production[citation needed], with Alan Skidmore, Johnny Almond, and Derek Healey (misrepresented on the sleeve as 'Dennis Healey'). (from Wikipedia)

Oops, sorry Marty--I didn't read subsequent posts before re-posting!

Clapton was very confused about what he wanted musically prior to getting off drugs and alcohol. He has sometimes been reluctant to really play his guitar much on his recordings. Other times he has been quoted, in his autobiography, that he liked it when they said Clapton is God.

That may be true--however, the music discussed here is from the 60s. His addiction was in the 70s.