A previously unheard recording of “Need Your Love So Bad” — a blues song that late Fleetwood Mac frontman Peter Green sang with the group in its early days — will come out in conjunction with the release of a new book about Green, The Albatross Man, this October.

Green recorded the vocal in his mother’s attic sometime in the mid-Sixties; the more familiar recording of the track came out on Fleetwood Mac’s 1969 LP, The Pious Bird of Good Omen. Former Pink Floyd frontman and Green’s friend, David Gilmour — who performed Green’s signature song “Albatross,” at the Peter Green Tribute last year — recorded the guitars for the new version, which was produced by Laurie Latham.