In the Kingdom of the Blind - S5-E9
Continuity mistake: On Centauri Prime, Londo has an audience with the demented Regent. In the initial shot, the babbling Regent holds both hands up near his face as he speaks. In the very next, reverse-angle shot, his hands are down at his sides. When it cuts back, his hands are up again. (00:36:30)
Chosen answer: It was a piece composed expressly for the episode by Christopher Franke, who simply called it "Bar Background Music."
Jean G