Some have said that most keyboards has been made by Bob Ezrin, David Gilmour and team of unknown musicians. It's false! The truth is that Rick played on 21 of the 26 songs and for 8 of this song, Rick is the sole Keyboard player.
There is six songs for which Rick has not played: Mother, In the Flesh, Stop and The Trial. And for Bring the boys back home and The show must go, there's no keyboard.
This information is provided by the book Comfortably Numb: A History of The Wall 1978-1981 by Vernon Fitch and Richard Mahon. This is the most serious reference about The Wall.
Here is the list of all keyboard player for each song who played on The Wall:
In the Flesh?
- Rick: Prophet 5
Roger: VCS3
Fred Mandel: organ
- Rick: piano and organ
David: Prophet 5
- Rick: Prophet 5, Minimoog and Rhodes
Another Brick in the Wall pt. 2
- Rick: organ and Prophet
- Bob Ezrin: Prophet, organ and piano
- Rick: Prophet 5
David: Prophet 5
Roger: VCS3
- Rick: piano
David: ARP Solina, Prophet, Clavinet
James Guthrie: ARP Solina
Roger: VCS3
- Rick: organ and Wurlitzer electric piano (with Wah-Wah)
- Rick: piano
Bob Ezrin: Prophet 5 and organ
- Rick: organ, organ pedals, piano, Prophet
Roger: VCS3
- Rick: Prophet 5
David: Prophet (low part)
- Rick: Prophet 5
- Rick: Rhodes electric piano, organ and Prophet
- Rick: Prophet 5
Bob Ezrin: synth and string synth
- Rick: Prophet 5
Bob Ezrin: piano
Roger: VCS3
- Rick: Prophe 5t
- no keyboard
- Rick: organ
David: Prophet 5 (low notes on outro solo)
- Rick: Prophet 5
Bob Ezrin: Prophet 5 and piano
- Fred Mandel: organ
David and James Guthrie: ARP Quadra (sequencer)
Bob Ezrin: Prophet 5
Roger: VCS3
- Rick: Prophet 5
- Rick: organ
Bob Ezrin: piano
David: Prophet 5
Roger: VCS3
- Bob Ezrin: piano
- Bob Ezrin: piano
- no keyboard
compilation: http://www.canadianpinkfloyd.com/blog/2 ... ds-on.html