He was part of the early lineup, a blues-rock band with a sound completely different from that of the later, more commercially successful lineup that featured Stevie Nicks and Christine McVie. I liked both incarnations of the band.
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Only recently did I discover the pre 1975 Fleetwood Mac, before Nicks and Buckingham joined the band. Glad I did, there was a lot of great music in the earlier Fleetwood Mac lineups as well.