"Sing a song of sixpence,"

By Mother Goose
Sing a song of sixpence,
A pocket full of rye;
Four-and-twenty blackbirds
Baked in a pie.
When the pie was opened
The birds began to sing;
Wasn't that a dainty dish
To set before a king?

Source: The Dorling Kindersley Book of Nursery Rhymes (2000)