The kazoo is a very instrument that produces sound through the humming of the human voice, relying on its diaphragm and resonating tubes to amplify the sound. It can produce a hoarse sound, somewhat similar to that of a saxophone. As long as the can sing the song, or the kazoo. How to play the kazoo? - Don' the kazoo, just hum it. When we put the big side in our mouth, don' it a harmonica. - You need to hum the tune. The vibration of the vocal cords makes the flute' diaphragm vibrate and make a sound. - You can change the tone of the kazoo twisting the cap on the flute' diaphragm. When the cover is twisted too tightly, its sound will be crisper. Conversely, it will sound hoarse. Features - ColorAssorted Color - Size of kazoo: about 12.3 x 1.7 x 0.8cm/ 4.84 x 0.7 x 0.3inch. - Wieght of kazoo: about 11.3g - Material: Metal Package list: 4 x kazoos 2 x paper tubes Note: * Colors may have slight differences due to different screens. * Please allow a small size error due to manual measurement. * or problems during use, please us and we will be at your service.