And if that mockingbird won't sing,Mama's gonna buy you a diamond ring.

And if that looking glass gets broke,Mama's gonna buy you a billy goat.

And if that diamond ring turns brass,Mama's gonna buy you a looking glass.

His 2004 hit "Mockingbird" famously interpolates these lyrics to address his daughters.

And if that billy goat won't pull,Mama's gonna buy you a cart and bull.

They recorded a famous soulful duet version in 1974.

And if that horse and cart fall down,You'll still be the sweetest little baby in town.

Hush, little baby, don't say a word,