Corrosion In The Pink room is an unreleased instrumental piece that the band would sometimes play during live shows in the early 1970s.
Originally broadcast ORTF1 in France, January 2, 1971 (filmed the month prior) as part of a TV special featuring the work of celebrated dance choreographer, and frequent Pink Floyd collaborator, Roland Petit.
"Corrosion in the Pink Room" is a song written by Waters, Gilmour, Wright, and Mason. It is an instrumental piece that was played at their live shows during the early 1970s. It is a very avant-garde piece, with eerie piano playing by Wright and scatting by Waters, reminiscent of the sounds on "Several Species of Small Furry Animals Gathered Together in a Cave and Grooving with a Pict". Halfway through, the song transitions to a jazzy blues jam, similar to "Funky Dung". It also was known to feature the "whalesong effect", used during live performances of "Embryo" and, later on, “Echoes".