What was Coca-Cola's 1971 advertising song commonly called after its opening lyric?

Coca-Cola's 1971 advertising song was commonly called “I'd Like to Buy the World a Coke.”

The phrase came from a television commercial known as “Hilltop,” filmed on a hillside outside Rome. The advertisement showed young people from different countries singing about unity while holding Coca-Cola. Its central lyric presented the drink as a symbolic way to share harmony across national and cultural boundaries.

The commercial's full song developed into “I'd Like to Teach the World to Sing (In Perfect Harmony),” written by Bill Backer, Billy Davis, Roger Cook, and Roger Greenaway. A later commercial version used the Coca-Cola line, while the commercial-free recording became a pop song.

The campaign is sometimes identified only by its longer song title, but the Coca-Cola advertising phrase is the shorter “I'd Like to Buy the World a Coke.” The ad remains one of the best-known examples of Coca-Cola linking a product to a broad emotional message.