Buf (m)
(with) definite article: illow drone, adjustable: cylindrical, straight, no bell, no cavity / single reed
Divergent, rear centre; The longest pipe of the instrument; It ends in the shape of a flat disk, or a "falsa campana" [false bell]; Term, according to Tucci in "Arberor" (Italo-Albanian), used in Lungro (prov. Cosenza).
Measurements according to Leydi: 200 mm (e♭¹); Big Surdulina [NB: ➺ my remark to Surdelina; ws]: 480 mm; According to Tucci: 170-500 mm; Pitch according to Leydi: d¹.
NB: Example(s) to be replaced with staff-notation.
Bufi, Scuordo, Trombo, Trombone, Trummuni, ·? (drone: low: remaining designations [not mentioned in available sources])
Leydi, Roberto: La zampogna in Europa. Como, 1979, p.142 (surdelina).
Leydi, Roberto: Typological outlines of the Italian bagpipes. In: SIMP IX (Stockholm, 1989), p.113 (pitch only, no term).
Tucci, Roberta: Le zampogne in Calabria. In: La zampogna: gli aerofoni a sacco in Italia (2005), II, p.107.
Tucci, Roberta: La zampogna in Calabria. In: Cinque: Kunsertu: la musica popolare in Italia (1977), p.117.