John Mayall's band provided my introduction to the
Pete Frame (Is that right?) diagrams of band "family trees".

The Mayall Band family tree is, of course, a monster,
accounting for so many personnel line-ups.
I never forgot studying the "tree" for the first time.

I owe Mayall for fostering and educating
some of the best-known musicians from the 60s and 70s
who made the music I grew up with.