♫100% aluminum ♫Hum into the kazoo to make a sound. The resulting sound varies in pitch and loudness with the player's humming. ♫Colors include: gold, silver, blue, green, red, purple.Size:4.7 inches ♫Kazoo is One of the easiest instruments to learn to play.♫Kazoo is One of the easiest instruments to learn to play.You do not have to learn music theory and score, not even have to practice. ♫These kazoos have been safety tested and are approved for children age three and up. ♫Just hum (don't blow),otherwise it's difficult to make a sound.Make ound with your throat rather than your mouth.