Bellows, as says Fede, wineskin or bag originally leather Piper full of air through the portaviento or torch, compress it with the arm, maintaining the sound of bagpipes. The gaita de fol, also called it simply fol or fole, played also by mi tierra de Aliste, la Carballeda, Sanabria, Alba, Tábara, after os Montes, Las Arribes, La Maragatería, El Bierzo and many other places of the perfectly area of Galici a and other parts of Spain