Double-bass regulator
very low semidrone, retunable during playing: conical, straight, no bell, no cavity / double reed
The lowest of all regulators, part of the Great Irish Pipe only.
4 keys (G, A, B, c).
NB: Example(s) to be replaced with staff-notation.
O’Neill, Francis: Irish minstrels and musicians: the story of Irish music [Chicago, 1913]. Cork, 1987 [facsimile], p.222.
Leydi, Roberto: La zampogna in Europa. Como, 1979, p.84 (➺ Uillean [sic] pipe).