Within You Without You by The Beatles
I have no idea what this song is titled by Pink Floyd
But I think it is on The Final Cut, which is all the songs that didn't make it onto The Wall double album. (BTW, if I am completely wrong, someone please let me know. Thank you kindly in advance.)
This song is short but cool, and the animation of this part of the movie makes it one of my favorites.
https://www.youtube.com/watch?v=_BpfOm8eCQo
The Policy of Truth by Depeche Mode
Blue on Black by Kenny Wayne Shepherd