Boston is a set which collects live recordings from an earlier era of the band's colourful history. The set features the classic blues line-up of Mick Fleetwood, Peter Green, Danny Kirwan, John McVie and Jeremy Spencer. Originally recorded at the Boston Tea Party venue over three nights in February 1970, for a planned release later the same year, these recordings were left in the can, unissued, following leader Peter Green's sudden decision to leave the band a few weeks after the dates. Tracks from the shows were eventually released in various forms in the mid-80s but these releases were blighted by poor sound sources. The discovery of the original 8-track tapes and a number of previously unreleased tracks in the late 90s allowed the material to be re-mixed, re-mastered, and substantially overhauled for release on 3 separate CD volumes.