Then Play On Songwriting Credits by Fleetwood Mac

Then Play On is the third studio album by Fleetwood Mac, released in September 1969 on Reprise Records in the UK. It was Peter Green's final complete studio album with the band before his psychiatric deterioration and departure in 1970, and the record that shows Green at his most compositionally ambitious and his most emotionally unstable simultaneously. The album moves away from the blues covers format of the debut toward a more psychedelic and progressive rock construction, with longer pieces, acoustic passages, and the blues idiom stretched toward something closer to art rock. Green wrote the bulk of the material; Danny Kirwan, who had joined the band in 1968 as a third guitarist, contributes several tracks and begins to show the songwriting voice that would develop across the next two years. 'Oh Well (Part 1)' and 'Oh Well (Part 2)' are the album's most discussed tracks: the first is a riff-based rock song with an unusually complex guitar arrangement, and the second is a classical-influenced acoustic instrumental that ranks among the stranger tracks in the band's catalog. Then Play On is historically significant as the closing document of the Peter Green era and the last album in which the band's blues identity was its dominant characteristic; the period that followed Green's departure saw Fleetwood Mac cycle through multiple lineup changes that would eventually bring Nicks and Buckingham into the band.