Bissex (Lat.: ‘twice six’)
(Lat.: ‘twice six’)
Experimental lute-guitar with 12 strings, invented by Van Heck of Paris and built there by J.-H. Naderman in 1770 and later; J.-F. Thiphanon also built it. Five strings (tuned e″–b′–g′–d′–a) pass over the fingerboard, which has 20 frets; the other seven strings (tuned ...