Row, Row, Row Your Boat

The words to this song were printed in 1852, but it took almost thirty more years for the tune we all know today to get attached to them, in 1881. It's sung as a round, just like “Sweetly Sings the Donkey” — each new voice jumps in while the others keep going, which is part of what makes it so fun (and so tricky) to sing in a group.