A Kazoo produces a pleasant 'buzzing' sound when you hum, sing or speak into it. The quality of the sound is very much dependant on the standard of the player, if you can sing or hum in tune - then you can play the Kazoo. A Kazoo is a member of the 'Membranophone' musical classification which is in the percussion instruments as the sound is created through a stretched membrane. This is broken down again into a sub category known as 'Merlitons'. The sound being created by a vibrating membrane.