Nicolai Ghiaurov, Fiorenza Cossotto, Renata Tebaldi, Leontyne Price and Carlo Bergonzi backstage at Carnegie Hall following a performance of the Verdi REQUIEM in 1964. Price, Cossotto, Bergonzi and Ghiaurov were the soloists, and Tebaldi was visiting her colleagues in the green room after the performance. Herbert von Karajan conducted.