Question: Who does the vocals on Money by the performer who also sang Have a Cigar?

full_context: Document 1: Have a Cigar: English folk singer Roy Harper provided lead vocals on the song. It was one of only two Pink Floyd recordings to feature guest lead vocals, the other being ``The Great Gig in the Sky ''with Clare Torry, though the latter piece featured no lyrics.
Document 2: Roger Waters discography: Roger Waterss primary instrument is the electric bass guitar. He briefly played a Höfner bass but replaced it with a Rickenbacker RM-1999/4001S, until around 1970 when he switched to Fender Precision basses. He often plays bass using a pick but is also known to play fingerstyle. Not only a bassist and vocalist, Waters has experimented with the EMS Synthi A and VCS 3 synthesisers and has played electric rhythm and acoustic guitars in recordings and in concert. Throughout his career he has used Selmer, WEM, Hiwatt and Ashdown amplifiers, also employing delay, tremolo, chorus, panning and phaser effects in his music.
Document 3: Speak to Me: "Speak to Me" is the first track on British progressive rock band Pink Floyd's 1973 album, "The Dark Side of the Moon", on which it forms an overture. Nick Mason receives a rare solo writing credit for the track, though recollections differ as to the reasons for this. Mason states that he created the track himself, whereas Richard Wright and Roger Waters stated the credit was a "gift" to Mason to give him some publishing income (subsequently regretted by the latter, following his acrimonious departure from the band). A live version is included on "Pulse".
Document 4: Wish You Were Here Tour: The North American Tour, also referred to as the Wish You Were Here Tour, was a concert tour by the British progressive rock band Pink Floyd in 1975 in support of their then-forthcoming album "Wish You Were Here". The tour was divided in two legs in the United States, West Coast and East Coast, and a gig in the UK at the Knebworth Festival.
Document 5: Shine On You Crazy Diamond: ``Shine On You Crazy Diamond ''The single edit of Part I Song series by Pink Floyd from the album Wish You Were Here Published Pink Floyd Music Publishers Ltd Released 15 September 1975 Recorded January -- July 1975 Genre Progressive rock ambient Length 26: 00 (All parts) 13: 32 (Parts I -- V) 12: 28 (Parts VI -- IX) 3: 53 (Single edit) Label Harvest (UK) Columbia / CBS (US) Songwriter (s) David Gilmour, Roger Waters, Richard Wright Producer (s) Pink Floyd
Document 6: I Am the Walrus: John Lennon -- lead vocals, electric piano, Mellotron Paul McCartney -- bass guitar, tambourine George Harrison -- electric guitar Ringo Starr -- drums Orchestrated, directed and produced by George Martin Session musicians -- strings, brass, and woodwinds Mike Sammes singers -- backing vocals Ray Thomas -- backing vocals Mike Pinder -- backing vocals Engineered by Geoff Emerick and Ken Scott Mixed by Geoff Emerick and John Lennon
Document 7: The Dark Side of the Moon: Returning from the US in January 1973, they recorded "Brain Damage", "Eclipse", "Any Colour You Like" and "On the Run", while fine-tuning the work they had already laid down in the previous sessions.  A foursome of female vocalists was assembled to sing on "Brain Damage", "Eclipse" and "Time", and saxophonist Dick Parry was booked to play on "Us and Them" and "Money".  With director Adrian Maben, the band also filmed studio footage for Pink Floyd: Live at Pompeii. Once the recording sessions were complete, the band began a tour of Europe.
Document 8: Welcome to the Machine: "Welcome to the Machine" is the second song on Pink Floyd's 1975 album "Wish You Were Here". It features heavily processed synthesizers and acoustic guitars, as well as a wide range of tape effects. Both the music and the lyrics were written by bassist Roger Waters.
Document 9: Have a Cigar: "Have a Cigar" is the third track on Pink Floyd's 1975 album "Wish You Were Here". It follows "Welcome to the Machine" and on the original LP opened side two. In some markets, the song was issued as a single. The song, written by Waters, is his own critique of the music industry at the time, and the hypocrisy of the band's record label to continue releasing more material.
Document 10: The Great Gig in the Sky: ``The Great Gig in the Sky ''is the fifth track on The Dark Side of the Moon, the 1973 album by the English progressive rock band Pink Floyd. The song features music by Richard Wright and non-lexical vocals by Clare Torry.
Document 11: The Story of Wish You Were Here: The Story of Wish You Were Here is a direct-to-video documentary about the making of "Wish You Were Here" album by Pink Floyd. After being shown on a few television channels, such as BBC Four, it was released on 26 June 2012, on DVD and Blu-ray.
Document 12: The Dark Side of the Moon: The Dark Side of the Moon is the eighth album by English rock band Pink Floyd, released on 1 March 1973 by Harvest Records. The album built on ideas explored in earlier recordings and live shows, but lacks the extended instrumental excursions that characterised their earlier work. Its themes explore conflict, greed, the passage of time, and mental illness, the latter partly inspired by the deteriorating mental state of founding member and principal contributor, Syd Barrett.
Document 13: Wish You Were Here (Pink Floyd song): ``Wish You Were Here ''is the title track on Pink Floyd's 1975 album Wish You Were Here. Like most of the album, it refers to former Pink Floyd member Syd Barrett and his breakdown. David Gilmour and Roger Waters collaborated to write the music, and Gilmour sang the lead vocal.
Document 14: Money (Pink Floyd song): David Gilmour -- lead vocals, electric guitars Roger Waters -- bass guitar, tape effects Richard Wright -- Wurlitzer electric piano (with wah - wah pedal) Nick Mason -- drums, tape effects
Document 15: Money (Pink Floyd song): "Money" is a song by the English progressive rock band Pink Floyd from their 1973 album "The Dark Side of the Moon". Written by Roger Waters, it opened side two of the LP record.
ground_truth: David Gilmour
sub_queries: Have a Cigar >> performer Answer: Pink Floyd
who does the vocals on money by Pink Floyd Answer: David Gilmour