A to G Music Kazoo (set of 8) The Kazoobie Kazoo is the best plastic kazoo you can buy. Kazoobie Kazoo uses the highest grade materials and every part of the process is "Made In The USA." The resonator material is very durable, the caps are pressed in using 100 lbs. of pressure. These kazoos have been safety tested and are approved for children age three and up. 8 kazoos in each order, colors will vary for Kazoos Hum into the kazoo to make a sound. The resulting sound varies in pitch and loudness with the player's humming.