"My manager said did I fancy trying to write a song with David Gilmour? I was delighted to have a track on a Pink Floyd album." Exclusive: Hear Phil Manzanera's demo that became a Pink Floyd cut

As he presents his new career-spanning solo box set, 50 Years of Music, Phil Manzanera is giving Guitar Player readers an exclusive premiere of his demo that David Gilmour transformed into “One Slip,” from Pink Floyd’s album A Momentary Lapse of Reason.

Known for his work as a founding member of Roxy Music, Manzanera has enjoyed a rich career apart from the group, both as a solo artist, collaborator and producer with artists that include Gilmour.

As he explains to Guitar Player, his track “Demo PM 1” began life as a cut for his 1990 album, Southern Cross, before David Gilmour took it in another direction.

"In late 1986 I started doing demos for a new solo recording project at my Gallery Studio in St. Ann’s Hill, Chertsey, which eventually became the album Southern Cross," the guitarist tells Guitar Player. "My manager at the time, Steve O’Rourke, who also managed David Gilmour and Pink Floyd, rang and said did I fancy trying to write a song with David that could be a single?

“David came over to the studio and I played him two tracks that could be worked on. He took them away as 24-track multi-tracks, and months later he invited me over to his studio Astoria and played me the track that people now know, as 'One Slip' on the A Momentary Lapse of Reason album. I was surprised, as I had thought he was working on the other track, but delighted to have a track on a Pink Floyd album."

You can hear Manzanera's track below.

Manzanera’s new 50 Years of Music set is a fascinating sprawl through the guitarist’s varied solo work. The 11-CD set includes his 10 solo albums plus one disc of rare bonus tracks. It’s the first-ever career-spanning collection of his solo work, much of which was inspired by the guitarist's multicultural upbringing. His childhood saw him travel with his Colombian mother and English father to Cuba, Venezuela and Hawaii, and those influences, combined with the British beat of his teen years, permeates his solo work.

50 Years of Music is presented in a 10-by-10-inch hard slipcover. In addition to the 11 CDs — remastered by Alchemy Mastering’s Barry Grint at London’s Air Studios and overseen by Manzanera — it includes a 100-page book with photos, handwritten notes, tape boxes, scribbles, clippings, alternate artwork, lyrics, compositions, thoughts as well as the original album booklets.

Manzanera — known for playing a range of electric guitars, including the Gibson Firebird VII — is both a prolific and stylistically varied guitarist, as reflected over the 11 discs in 50 Years of Music.

The musical treats include his solo debut, Diamond Head, featuring Robert Wyatt, Brian Eno and Roxy drummer Paul Thompson, and his 1977 sophomore release, Listen Now, which includes guests Eno and Kevin Godley and Lol Crème of 10cc. It’s 1978 follow-up, K-Scope, finds Manzanera working with Tim and Neil Finn (Split Enz/Crowded House) in a more new-wave direction and includes the Finn Brothers–led tracks “Hot Spot” and “Slow Motion TV.”

The 1982 instrumental album Primitive Guitars reflects Manzanera’s Latin and psychedelic roots, while 1990’s Southern Cross finds him exploring his Cuban childhood as he reunites with Tim Finn on vocals. The theme continues on 1999’s Vozero, which also became the first of his “white album trilogy,” with Manzanera singing as well as songwriting. He’s joined by longtime friend and collaborator Robert Wyatt as well as GIlmour for 2004’s 6PM , and regroups with Roxy cohorts Eno, Andy Mackay and Paul Thompson for 2005’s 50 Minutes Later.

Lastly, Firebird VII contains a quartet of technically gifted international musicians from a wide spectrum of genres, while 2015’s The Sound of Blue from 2015, is a warm, emotional album on which his guitars work both in prog-rock and post-punk melodic directions.

The box set also includes the bonus disc Rare Two, Manzanera's personally curated collection of nine unreleased tracks, demos, live recordings and archival rarities, including the Roxy Music’s live version of "Impossible Guitars" and his "Demo PM 1" which became Pink Floyd’s "One Slip" from A Momentary Lapse of Reason.

Says Manzanera, “This box set gives the listener an idea of what I’ve been up to in my parallel solo musical world away from Roxy for the last 50 years. It always has been about working together with friends to achieve the common goal of music ‘Sin Fronteras.’”

Phil Manzanera’s 50 Years of Music is available now