- "Speak to Me" serves as a fitting overture, with its juxtaposition of a heartbeat, a ticking clock, a cash register, maniacal laughter, and some unsettling Spoken Word in Music.
Chris Adamson: I've been mad for fucking years, absolutely years. I've been over the edge for yonks. Been working with bands so long, I went crazy.
Gerry O'Driscoll: I've always been mad, you know I've been mad, like most of us are. Very hard to explain why you're mad, even if you're not mad.
- "On the Run" is almost otherworldly, what with the high-tempo synthesizer sound, helicopter noises, and echoed laughter that borders on Evil Laugh territory.
- "Time" may sound like an upbeat track at first, but the lyrics note how life seems to go by faster as you get older. Relative to this theme of time sneaking up on you, the first half a minute also features softly ticking clocks that give way to a loud alarm clock that can catch first-time listeners off-guard.
The sun is the same in a relative way, but you're older
Shorter of breath, and one day closer to death
- "The Great Gig in the Sky". Their goal was to create a track that simulates the feeling of dying—and they did.
- "I never said I was frightened of dying."
- "Brain Damage", especially this part:
Nightmare Fuel / The Dark Side of the Moon
Considering the whole album is about stuff that can drive you insane, it's no surprise that it has plenty of Nightmare Fuel.