neyBWThe Turkish ney reed flute, together with the Turkish tanbur lute and Turkish kemençe fiddle are considered the most typical instruments of Classical Ottoman music. The ney also plays a primary role in the music of the Mevlevi Sufi rites (semâ).

 More background information:

rim-blown, oblique flute made of reed, the Turkish ney has six finger-holes in front and a thumb-hole in back. Using cross-fingering, finger-hole shading, and embouchure adjustment, the journeyman player can produce any pitch over a two-and-a-half octave range or more. Nearly all Turkish neys have a mouthpiece made of water buffalo horn, or sometimes ivory, ebony, plastic, or similar durable material.

Ney on Wikipedia