"Alan's Psychedelic Breakfast" is the fifth and final track from the 1970 Pink Floyd album Atom Heart Mother, credited to the whole group. It is a three-part instrumental. Wikipedia
Genre: Progressive rock; art rock; musique concrète; ambient; psychedelic
Producer(s): Pink Floyd, Norman Smith (executive producer)
Recorded: 18 June, 10–21 July 1970
Songwriter(s): Nick Mason, David Gilmour, Roger Waters, Richard Wright