It is an instrument that produces sound when the player hums, vocalizes or blows into it. It is known to bring a timbral buzzing impact to your voice. The pitch and loudness of the sound may vary as per the humming. It uses a resonating membrane to amplify the sound. You can find it in many types, such as plastic, glass, wooden and electric kazoos. It is easy to play. An easy way is to practice the song without kazoo first and then hum the same into it.