Boston 3 features the classic 'Then Play On' era Fleetwood Mac line-up of Mick Fleetwood, Peter Green, Danny Kirwan, John McVie & 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 unissued, following leader Peter Green's sudden decision to leave the band a few weeks after the performances. This release is the third of three volumes that document Fleetwood Mac's Boston performances.