What is sung by Pink in the stall in the Wall film?”
When Pink is sitting in the bathroom stall, he sings, of course, “Stop.” However, before he sings that, he sings scraps of other songs he has been working on, reading them from his songbook. These later became parts of “Your Possible Pasts” from _The Final Cut_ and “The Moment of Clarity” from _Pros and Cons of Hitchhiking_.