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. Guitarist and singer Danny Kirwan joined in 1968. Christine Perfect, who initially contributed as a session musician, married McVie and became an official member in July 1970 on vocals and keyboards, two months after Green left; she became known as Christine McVie.
Primarily a British blues band in their early years, Fleetwood Mac achieved a UK number-one single in 1968 with the instrumental "Albatross", and had other UK top ten hits with "Man of the World", "Oh Well", and "The Green Manalishi". After Green's departure, Spencer and Kirwan also left in 1971 and 1972 respectively, with Bob Welch replacing Spencer, and Bob Weston and Dave Walker replacing Kirwan. By the end of 1974, Weston and Walker had been dismissed and Welch had left, leaving the band without a guitarist or male vocalist.