Aside from Roxy Music, Phil Manzanera has worked as a writer, producer and solo artist with many of the luminaries of modern music, such as Steve Winwood, David Gilmour, John Cale, Godley & Creme, Nico and John Wetton. He has co-written material with many artists, including Brian Eno, Tim Finn, Robert Wyatt and David Gilmour and co-wrote Pink Floyd's single "One Slip" from their 1987 album "A Momentary Lapse of Reason".Diamond Head was Manzanera's first solo album. Released in 1975 it featured most of the former and current members of Roxy Music, except Bryan Ferry. Brian Eno co-wrote and sang on two tracks ("Big Day" and "Miss Shapiro"), Paul Thompson, Eddie Jobson and Andy Mackay all contributed, and Roxy's occasional tour bassist John Wetton (ex Family, and then a member of King Crimson) played bass and duetted on vocals with Doreen Chanter on "Same Time Next Week". Robert Wyatt co-wrote and sang (in Spanish) on "Frontera", and the members of Manzanera's pre-Roxy group Quiet Sun featured on the instrumental tracks.