Hi there,

The lyrics are:

Hush, little baby, don't say a word.
Mama's gonna buy you a mockingbird
And if that mockingbird won't sing,
Mama's gonna buy you a diamond ring

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

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

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

And if that cart and bull turn over,
Mama's going to buy you a dog named Rover.

And if that dog named Rover won't bark,
Mama's going to buy you a horse and cart.

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