Best TV Commercial Ever?
" I'd Like to Teach the World to Sing (In Perfect Harmony) " is a pop song that originated as the jingle "Buy the World a Coke"  in the groundbreaking 1971 "Hilltop" television commercial for Coca-Cola and sung by The Hillside Singers . "Buy the World a Coke" was produced by Billy Davis and portrayed a positive message of hope and love, featuring a multicultural collection of teenagers on top of a hill appearing to sing the song.
The popularity of the jingle led to it being re-recorded in two versions; one by The New Seekers and another by The Hillside Singers , as a full-length song, dropping references to Coca-Cola. The song became a hit record in the US and the UK.
The idea originally came to Bill Backer , an advertising executive working for McCann Erickson , the agency responsible for Coca-Cola . Backer, Roger Cook and Billy Davis were delayed at Shannon Airport in Ireland. After a forced layover with many hot tempers, they noticed their fellow travelers the next morning were talking and joking while drinking Coca-Cola. Backer wrote the line "I'd like to buy the world a Coke" on a napkin and shared it with British hit songwriters Cook and Roger Greenaway .
The melody was derived from a previous jingle by Cook and Greenaway, originally called "True Love and Apple Pie"  that was recorded in 1971 by Susan Shirley. Cook, Greenaway, Backer, and Billy Davis reworked the song into a Coca-Cola radio jingle, which was performed by English pop group The New Seekers and recorded at Trident Studios in London. The radio jingle made its debut in February 1971 before being adapted for the iconic Coca-Cola "Hilltop" television commercial later that year.
The commercial ended with the statement:
On a hilltop in Italy,
We assembled young people
From all over the world...
To bring you this message
From Coca-Cola Bottlers
All over the world.
It's the real thing. Coke.
The song became so popular that its creators revised it, adding three verses and removing product references to create a full-length song appropriate for commercial release. The full-length song was re-recorded by both The Hillside Singers and The New Seekers and both versions became huge hits.