There is a musical instrument is black gourd-shaped, called what?

There is a musical instrument that is black gourd-shaped, called ocarina

Ocarina is a closed-mouth wind instrument unique to the Han people, and occupies an important position in the history of primitive art in the world. The origin of the ocarina is related to the labor and production activities of the Han ancestors, and it may have been made by the ancestors to imitate the cries of birds and animals to trap the prey. Later with the social progress and evolved into a simple musical instrument, and gradually increase the sound hole, the development of melodic instruments can play tunes.

The ocarina is a kind of blowing musical instrument fired with clay in ancient times, round or oval, with six holes (now there are eight holes, nine holes, ten holes, double-octave, etc., six-hole ocarina is not common on the market). Also known as "ceramic ocarina". The most common ceramic, but also stone and bone.

Structure:

The structure of the hole ocarina is a hollow ball-like body. There is a blow hole, nine pronunciation holes. The upper end of the main body is equipped with a blow hole, the front side is equipped with seven pronunciation holes, and the reverse side is equipped with two pronunciation holes.