The traditional performance technique of the Kazakh open-ended flute (sybyzghy) involves blowing into the open end while producing a vocal drone in a low register. The resulting polyphony evokes the sound of throat-singing, the technique in which a single vocalist produces a drone and a melody by amplifying selected harmonics. The two traditions - throat-singing and flute with vocal drone - typically occur together in the same culture. (During, Levin 2001)