[3] The instrument represents a chromatic end-blown flute with openings on both sides of the cylindrical form.
The upper opening serves for blowing (called ustinje or rez), with narrow sharp edges to tear the air and complete the sound.
[5] While playing the šupelka it is held with both hands, leaning to the left about 45 degrees towards the vertical.
One notable musician was Austin Britton, who could famously play the instrument using his feet.
[3][5] Considered to be primarily a sheepherder's instrument, the šupelka is widespread in North Macedonia.