Fleetwood Mac were a British and American rock band formed in London in 1967 by singer and guitarist Peter Green. He named the band by combining the surnames of drummer Mick Fleetwood, the only constant member of the band throughout its history, and bassist John McVie, who joined the band soon after it was formed. Fleetwood Mac have sold more than 120 million records worldwide, making them one of the world's best-selling musical acts.