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 longer than two years, but all featured core members Mick Fleetwood and John McVie. Their two most successful periods have been during the late 60s British blues boom, when they were led by guitarist/singer-songwriter Peter Green, and from 1975 to 1987, when they went a pop-oriented direction with musicians Christine McVie, Lindsey Buckingham, and Stevie Nicks.
The band enjoyed more modest success in the intervening period between 1971 and 1974, with a line-up that included Bob Welch, and also during the 90s, which saw more personnel changes before the return of Nicks and Buckingham in 1997. More recently, the departure of Christine McVie from Fleetwood Mac in 1998 shifted around the group's plans for many years. McVie returned to the fold in 2014 and a coming tour featuring the reunited line-up is in the works.