The ocarina is an ancient flute-like wind instrument. It is often ceramic, but other materials may also be used, such as plastic, wood, clay and others.
Variations do exist, but a typical ocarina is an enclosed space with four to twelve finger holes and a mouthpiece that projects from the body. The ocarina, unlike other vessel flutes, has the unusual quality of not relying on the pipe length to produce a particular tone. Instead the tone is dependent on the ratio of the total surface area of opened holes to the total cubic volume enclosed by the instrument.