Chicago to Sammy Cahn in 5 Steps
- Chicago was written by Harry Nilsson
- Harry Nilsson appeared in a 1994 Public Service Announcement for Recording Artists, Actors, and Athletes Against Drunk Driving
- Recording Artists, Actors, and Athletes Against Drunk Driving created a PSA featuring Paul McCartney
- Paul McCartney was born on June 18
- June 18 is the birthday of Sammy Cahn