The ocarina is an ancient flute-like wind instrument

[1] While several variations exist, an ocarina is typified by an oval-shaped enclosed space with four to twelve finger holes and a mouth tube projecting out from the body. It is often ceramic。
The ocarina is a very old family of instruments, believed to date back some 12,000 years.

[2] Ocarina-type instruments have been of particular importance in Chinese and Mesoamerican cultures. For the Chinese, the instrument played an important role in their long history of song and dance. The ocarina has similar features to the Xun, another important Chinese instrument.

[3] Different expeditions to Mesoamerica, including the one conducted by Cortés, resulted in the introduction of the ocarina to the courts of Europe. Both the Mayans and Aztecs had produced versions of the ocarina, but it was the Aztecs who brought the song and dance that accompanied the ocarina to Europe. The ocarina went on to become popular in European communities as a toy instrument.[4][5]
How an ocarina works:
1. Air enters through the windway
2. Air strikes the labium, producing sound
3. Air vibrates throughout the inside of the ocarina
4. Covering and uncovering holes lowers and raises the pitch  

Material: Porcelain or ceramic