Out of the dozen different line-ups since Fleetwood Mac formed in 1967, there's only one incarnation that truly matters for most listeners. During their time together, Mick Fleetwood, John McVie, Christine McVie, Stevie Nicks and Lindsey Buckingham created some of popular music's most enduring records, including 1977's Rumours. Written and recorded as multiple relationships within the band were collapsing, the landmark album became a worldwide hit...