;
(2) the haute-contre or alto cornet with the lowest note
;
(3) the taille or tenor cornet with the lowest note
and the basse or bass or pédalle[6] cornet with the lowest note
.
The cornets of the lowest pitch were sometimes furnished with an open key which, when closed, lengthened the tube, and extended the compass downwards by a note. Mersenne figures a cornon with a key.