Cornu
Cornu (Lat.: horn), 1. circular trumpet of ancient Rome, a military and circus instr., of Etruscan origin, with narrow conical bore and slender bell, in form of a letter G. Two specimens excavated at Pompeii are 3.33 m. (11 ft.) long, are pitched in G, and have detachable mouthpieces (average length of mouthpiece 17 cm.) that are wide and shallow. A wooden bar set across the diam. served to strengthen the instr. structurally and furnished a handhold; one end rested on the player's left…