sentences:  The basso made his debut as Varlaam in "Boris Godunov" at La Fenice, Venice, in 1946.He sang at the Teatro alla Scala from 1947 to 1960, the Teatro Colón (1949) and Covent Garden (1952).He appeared at the Metropolitan Opera, opening the 1953/54 season, in "Faust" (with Jussi Björling, Victoria de los Ángeles and Robert Merrill, conducted by Pierre Monteux and directed by Peter Brook in his Met debut), followed by the title roles of "Don Giovanni" and "Boris Godunov".