Peter - Peter is the main character in this story. He is a little boy who lives in Russia right on the edge of a meadow. Peter is very curious about the meadow so he goes into the meadow, against his grandfather's will. Peter is represented by the strings in this musical piece.
Grandfather - Peter's grandfather warns Peter not to go into the meadow because there is a wolf that lives there and it is dangerous. Peter's grandfather is represented by the bassoons.
Bird - The bird is constantly flying away from and fighting with the cat and duck, in this story. The bird is represented by the flutes.
Duck - The duck fights with the bird and they make fun of each other in this story. The duck is represented by the oboes.
Cat - The cat tries to eat the bird in the story of Peter and the Wolf. The cat is represented by the clarinets.