In late 1974, while Fleetwood was scouting studios in Los Angeles, he heard the American folk-rock duo Lindsey Buckingham and Stevie Nicks. By 1974, Welch, Weston and Walker had all either departed or been dismissed, leaving the band without a male vocalist or a guitarist. Green, Spencer and Kirwan all left in succession during the early 1970s, replaced by guitarist and vocalist Bob Welch, guitarist Bob Weston and vocalist Dave Walker. Primarily a British blues band at first, Fleetwood Mac achieved a UK number one with ' Albatross', and had other hits such as the singles ' Oh Well', ' Man of the World', and ' The Green Manalishi'.
Keyboardist and vocalist Christine Perfect, who contributed as a session musician from the second album onwards, married McVie and joined in 1970, becoming known as Christine McVie. Danny Kirwan joined as a third guitarist and vocalist in 1968. Bob Brunning was hired as a temporary bass guitarist before John McVie joined the line-up in time for their eponymous debut album. Fleetwood Mac were founded by guitarists and vocalists Peter Green and Jeremy Spencer, and drummer Mick Fleetwood. Fleetwood Mac are a British-American rock band, formed in London in 1967.