Written by bassist , these songs are central to the album's concept—the story of a character named "Pink" who builds a metaphorical wall around himself to cope with personal trauma.

: "The Happiest Days of Our Lives" concludes with a loud, high-pitched scream from Waters, transitioning immediately into the famous drum beat of "Another Brick in the Wall, Part 2".

: A world-famous protest song against rigid, oppressive formal education and corporal punishment. Musical Structure and Seamless Segue

: The Wall has sold over 30 million copies, making it the best-selling double album of all time.