A simple wind instrument is a type of musical instrument that is played by blowing air into it. The most common examples of this type of instrument are the RECORDER, kazoo, ocarina, and pennywhistle. The RECORDER is an end-blown flute with eight finger holes and a double reed mouthpiece. The kazoo is a small, five-letter instrument made from a hollow cylinder with a thin membrane stretched over one end. The ocarina is a seven-letter egg-shaped vessel with six to twelve finger holes. The pennywhistle is a twelve-letter instrument made from a metal or plastic tube with six finger holes. All of these instruments produce sound when air is blown into them, making them simple wind instruments.