If the book is about masters the founder of the Rock and Roll Hall of Fame didn't identify black or female Masters because there weren't any.
Bullshit.
Jimi Hendrix?
How about Carol Kaye? Probably the single most recorded bass player in all of history.
This goes along with complaints that there are no black or female old masters of art. Recently there was a complaint that a movie about 17th century Denmark didn't have black actors.
I got one for you.
James "Blood" Ullmer.
His album "Black Rock" is a classic.
Here he is in Europe being highly political.