Trombo (m)
(with) definite article: ? [il?]low drone, adjustable: cylindrical, straight, bell, cavity? / double reed
Val d’Agri [SE of Potenza].
2 pieces: Fuso (175 mm) and bell (175 mm), connected by tenon and mortise; Pitch: (ca.) c¹; Though the bore of both drones is usually cylindrical, it may, according to Scaldaferri, also be conical (➺ Bore), depending on a maker’s personal choice.
NB: Example(s) to be replaced with staff-notation.
Scaldaferri, Nicola: La zampogna in Basilicata. In: La zampogna: gli aerofoni a sacco in Italia (2005), II, p.59, 64.