SURDELINA: Italian musical instrument
https://worldhitz4u.blogspot.com/2014/02/surdelina-italian-musical-instrument.html
The surdelina is described and illustrated by Mersenne as the
musette de Naples; its construction was very complicated. Mersenne opines that
the musical instrument was fabricated by Jean Baptiste Riva, Dom Julio and
Vincenze; though Mersenne seems to have made alterations himself in the main
musical instrument that is not very plainly explained. There were two chaunters
with narrow cylindrical bore and having both finger-holes and keys; and two
drone, each of them have ten keys. The four pipes were attached in the same
stock and double reeds were used all through; the bag of the instrument was
inflated by means of bellows.