Here is how the song goes:

Hush, little baby, don’t say a word
Papa’s gonna buy you a mockingbird

And if that mockingbird won’t sing
Papa’s gonna buy you a diamond ring

And if that diamond ring turns brass
Papa’s gonna buy you a looking glass

And if that looking glass gets broke
Papa’s gonna buy you a billy goat

And if that billy goat won’t pull
Papa’s gonna buy you a cart and bull

And if that cart and bull turn over
Papa’s gonna buy you a dog named Rover

And if that dog named Rover won’t bark
Papa’s gonna buy you a horse and cart

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