Fleetwood Mac are a British-American rock band formed in London in 1967 by guitarist and singer Peter Green. Green recruited drummer Mick Fleetwood, guitarist and singer Jeremy Spencer and bassist Bob Brunning, with John McVie replacing Brunning a few weeks after the band's first public appearance at the 1967 National Jazz & Blues Festival in Windsor. The band became a five-piece in 1968 with the addition of guitarist and singer Danny Kirwan.
https://en.wikipedia.org/wiki/Fleetwood_Mac