7. Peter Green
Often overlooked on lists such as these due to his spectacular exit from music at the height of Fleetwood Mac's creative success.
Peter Green had already made a name for himself as a guitarist with John Mayall's Bluesbreakers, in his brief stint with the band he had cemented his place in rock and roll history.
But that wasn't quite enough for him, Green wanted to form his own band, so he formed Fleetwood Mac and poached members of John Mayall's band in the process.
He fell in and out of the spotlight for the next two decades, struggling with mental illness and only making baby steps back into the world of rock and roll.
His influence was such that Gary Moore, another legendary Les Paul guitarist, even made an album called Blues for Greeny. He is seen by many as the best lead guitarist in the electric blues movement of the 60s.