Learn to Play Educational Music Pack includes Children's Humazoo, How to Play Humazoo Spec Sheet, and (Twinkle Twinkle) Sheet Music. All plastic kazoo humazooo. Imitates any instrument or human voice has 2-inch body with contrasting cap. The Hum- A -Zoo is a great way to introduce young children to playing musical instruments. Simply hum just like a kazoo. (Humazoo color varies). This fun music pack also Includes a “How to play the Humazoo spec sheet and sheet music to a popular children’s song favorite, “Twinkle Twinkle”