Gaitero (m)
(with) definite article: elany person who plays some kind of bagpipe (&c.)
According to the authors of my source, in Aragón a generic term for folk musicians (including pipers); NB: Probably, Blecua Vitales & Mir Tierz intended to convey that the term is also used for a group of musicians that include at least 1 piper, because I doubt that it would even be used for any musician, or group (regardless of the instruments they play); NB: ➺ homonyms.
Blecua Vitales, Martín & Mir Tierz, Pedro: La gaita de boto aragonesa. Zaragoza, 1998, p.15.
Mir Tierz, Pedro: Pasado y presente de la gaita de boto aragonesa. In: Anuario da Gaita 1993 (8), p.23-30 (passim).