Atlantic-City Convention Center: il piede di una canna del Grand Ophicléide 16 (Foto Jean-Louis Coignet)

Atlantic-City Convention Center: vue du pied d'un tuyau de Grand Ophicléide 16 (Photo Jean-Louis Coignet)

Atlantic-City Convention Center: the foot of a Grand Ophicléide 16 pipe (Photo Jean-Louis Coignet)