The end of week videos about Verona, led me to this video posted by MultigramClassical of what they describe as the greatest mass in history, Verdi's Requiem Mass. It is sung at the Arena di Verona by Luciano Pavarotti and 3.000 members of the World Festival Choir accompanied by the Moscow Philarmonic Orchestra, conducted by Lorin Maazel, on the 45th Anniversary (August 1990) of the explosion of the atomic bomb on Hiroshima.