Bone flute is a kind of flute and the earliest musical instrument. Also known as eagle flute or eagle bone flute, Tibetan, Tajik, Kirgiz edge air-sounding musical instruments, called Dangja in Tibetan. Made of eagle wing bones, it is popular in Tibetan pastoral areas such as Tibet, Qinghai, Yunnan, Sichuan and Gansu. Often used for solo. It is a self-entertainment wind instrument favored by Tibetan youths. It is mostly played for self-entertainment during grazing or field work in summer.

A bone flute (remnant) from the Northern Dynasty (4th to 5th century AD) was unearthed at the Tuokuzsalai site in Bachu County, Xinjiang. The Tajik people call it Nayi, and the Kirgiz people call it Choaor. It is made from the wing bone of a big eagle, about 25 cm long and 1.5 cm in diameter. The inside of the tube is hollow, both ends are connected, and three holes are opened at the lower end of the tube. When making, first clean the flesh and bones, saw off the joints at both ends, smooth the upper and lower nozzles, and remove the marrow. The nozzles at both ends are oval, the upper port is larger, and the lower port is smaller. From the lower port upward, drill a sound hole with a diameter of 0.7 cm (slightly elliptical) every 2.2 cm or so, with a total of three holes. The flute body is decorated with carved patterns or inscriptions. It is mostly used in grand festivals and wedding occasions, and is also used as an accompaniment for singing and dancing, sheep holding, and horse racing. The music includes "The Tower Wants Myself" and so on.