Jeremy Cedric Spencer is a British musician, best known for playing slide guitar and piano in the original line-up of the rock band Fleetwood Mac. A member since Fleetwood Mac's inception in July 1967, he remained with the band until his abrupt departure in February 1971, when he joined the "Children of God", a new religious movement now known as "The Family International", with which he is still affiliated. After a pair of solo albums in the 1970s, he continued to tour as a musician, but did not release another album until 2006. He released further solo albums from 2012 onwards and has also recorded as part of the folk trio Steetley. As a member of Fleetwood Mac, he was inducted into the Rock and Roll Hall of Fame in 1998.

Daniel David Kirwan was a British musician whose greatest success came as guitarist, singer and songwriter with the blues-rock band Fleetwood Mac between 1968 and 1972. He released three albums as a solo artist from 1975 to 1979, recorded albums with Otis Spann, Chris Youlden, and Tramp, and worked with former Fleetwood Mac colleagues Jeremy Spencer and Christine McVie on some of their solo projects. He was inducted into the Rock and Roll Hall of Fame as a member of Fleetwood Mac in 1998.