Unlike the Highland bagpipe, each of the three pipes just mentioned has a small bellows, expanded and contracted by the motion of the player’s arm to fill the bag with air, rather than by the breath of the player, blown directly into it.
Erinevalt Šoti mägismaa torupillist täidab nendel kolmel eelmainitud torupillil koti õhuga väike lõõts, mida mängija käsivarrega kokku surub, selle asemel et sinna otse sisse puhuda.