There is nothing like having a successful commercial to your credit to fill up your bank account. Greenaway and Cooke teamed up with two other writers to craft this commercial for Coca-Cola in 1971. I hesitate to post this one because I'd rather scrub my ears out with Drano than listen to it, but it's important for the historical record.
The New Seekers: "I'd Like to Teach the World to Sing"