Fleetwood Mac is a British and American rock band formed in 1967. From the band's inception through the end of 1974, no incarnation of Fleetwood Mac lasted as long as two years, but all featured core members Mick Fleetwood and John McVie. The two most successful periods for the band were during the late 1960s British blues boom, when they were led by guitarist Peter Green; and from 1975-87, with more pop-orientation, featuring Christine McVie, Lindsey Buckingham and Stevie Nicks.