It has a number of small openings along the mouthpiece, and when air is blown into them, a reed sitting in behind vibrates, producing the sound.
Faynuus aftiinkiisu sii gabaabsiyayo ayaa miiska gidaarka ku tiirsan ee lugta la'a saaran, laydhaa macaan ee dhacaysa ayaa marba dubaalada ku dhacayso oo dhaafaysa, dubaaladuna intay dhadho ayay haddana isa soo kojinaysaa.