The New Seekers' biggest hit and best-known song, I'd Like To Teach The World To Sing, started life as a Coca-Cola commercial. Find out more in the following books:
The Coca-Cola story in full, including the inevitable references to Eve Graham and the New Seekers (pages 306 and 395, 1994 paperback) and the famous "buy the world a Coke" commercial.
On the same subject ...
I'd Like The World To Buy A Coke: The Life and Leadership of Roberto Goizueta
David Greising
Publisher: Wiley
Publication date: 1998
The Real Coke, The Real Story
Thomas Oliver
Publisher: Random House
Publication date: 1986