Suona, also called dida, laba or haidi, is a traditional double-reeded Chinese musical instrument. The Suona's basic design originated in ancient Iran, then called "Sorna". Suona appeared in China around the 3rd century. It had a distinctively loud and high-pitched sound, and was used frequently in Chinese traditional music ensembles, particularly in those that perform outdoors. It was an important instrument in the folk music of northern China, particularly in provinces of Shandong and Henan, where it has long been used for festival and military purposes. It is still being used, in combination with sheng mouth organs, gongs, drums, and sometimes other instruments in weddings and funeral processions. Such wind and percussion ensembles are called chuida or guchui. Stephen Jones has written extensively on its use in ritual music of Shanxi. It was also common in the ritual music of Southeast China. In Taiwan, it was an essential element of ritual music that accompanied Daoist performances of both auspicious and inauspicious rites, i.e., those for both the living and the dead. One of the most famous pieces that uses suona as the leading instrument is called "Bai Niao Chao Feng", or "Hundred Birds Worship the Phoenix". The movie Song of the Phoenix casts the rise and fall of the popularity of suona in modern Chinese musical history.

A double reed is a type of reed used to produce sound in various wind instruments. In contrast with a single reed instrument, where the instrument is played by channeling air against one piece of cane which vibrates against the mouthpiece and creates a sound, a double reed features two pieces of cane vibrating against each other. This means, for instruments with the double reed fully exposed, that the air flow can be controlled by the embouchure from the top, bottom and sides of the reed. The term double reeds can also refer collectively to the class of instruments which use double reeds.