A NY Times obituary of Keith Olsen, “a record producer whose slew of hits included the first Fleetwood Mac album with Stevie Nicks and Lindsey Buckingham, whom he helped bring into the band”, includes this story.
In the ’60s, before Peter Green left (when I still listened to them), Fleetwood Mac was a blues band. When Green left, Olsen brought in Nicks and Cunningham and their soft-rock sound. John McVie was reluctant to adopt the new sound.
“John McVie said to me, ‘You know we’re a blues band, this is really far away from the blues,’” Mr. Olsen recalled. “And I said, ‘I know, but it’s a lot closer to the bank.’”