24 basses and bass-baritones sing Grand Inquisitor’s low E from Verdi’s Don Carlo

Josef Herrmann, Alexander Welitsch, Giulio Neri, Nicola Moscona, Hermann Uhde, Pavel Manolov, Ferruccio Mazzoli, Nicola Zaccaria, Ivo Vinco, Kurt Bohme, Martti Talvela, Valery Yaroslavtsev, Nicolai Ghiaurov, David Ward, Antonio Zerbini, Franco Pugliese, Marco Stefanoni, Dimiter Petkov, Hans Sotin, John Macurdy, Giovanni Gusmeroli, Jerome Hines, Justino Diaz, Samuel Ramey.