then who was the lead vocalist of the band?
The vocalists kept changing and one such vocalist was Dave Walker.
Fleetwood Mac
Primarily a British blues band, Fleetwood Mac scored a UK number one with "Albatross", and had other hits such as the singles "Oh Well" and "Man of the World". All three guitarists left in succession during the early 1970s, to be replaced by guitarists Bob Welch and Bob Weston and vocalist Dave Walker. By 1974, all three of them had either departed or been dismissed, leaving the band without a male lead vocalist or guitarist. In late 1974, while Fleetwood was scouting studios in Los Angeles, he was introduced to American folk-rock duo Lindsey Buckingham and Stevie Nicks. Fleetwood Mac soon asked Buckingham to be their new lead guitarist, and Buckingham agreed on condition that Nicks would also join the band. 
songs on the album rumors by fleetwood mac "Go Your Own Way", "Dreams", "Don't Stop",  "You Make Loving Fun" , and others. does this album belongs to any band? Yes, Fleetwood Mac. who are its members? Peter Green, Mick Fleetwood, Christine Perfect, Jeremy Spencer and, John McVie. where was the above album recorded? Record Plant in Sausalito, California. what is the genre of the band? Rock. how did the album perform commercially? It was an instant commercial success. was their any dispute regarding the band's name? Yes, the band manager , Clifford Davis formed the "New Fleetwood Mac" and made them perform in the place of the original. which awards did it win? Yes, the album won a Grammy Award for Album of the Year in 1978. name some other album or songs of it? "Albatross", "Oh Well", "Man of the World" and others. is the first one song or album? UNANSWERABLE was the band named after the second member you mentioned above? Yes, his and that of John "Mac" McVie. which instrument does he play? The former played drum. is the former the vocalist of the band? No, he was the drummer.
wiki:7740854
Fleetwood Mac [SEP] Introduction
Fleetwood Mac are a British-American rock band, formed in London in 1967. Fleetwood Mac were founded by guitarist Peter Green, drummer Mick Fleetwood and guitarist Jeremy Spencer, before bassist John McVie joined the lineup for their self-titled debut album. Danny Kirwan joined as a third guitarist in 1968. Keyboardist Christine Perfect, who contributed as a session musician from the second album, married McVie and joined in 1970. Primarily a British blues band, Fleetwood Mac scored a UK number one with "Albatross", and had other hits such as the singles "Oh Well" and "Man of the World". All three guitarists left in succession during the early 1970s, to be replaced by guitarists Bob Welch and Bob Weston and vocalist Dave Walker.