The tenor sang regularly in Naples and Bologna, and made guest appearances at the New York City Opera in 1947: La traviata (with Enzo Mascherini as Giorgio), Rigoletto (opposite Giuseppe Valdengo and Virginia MacWatters), Madama Butterfly, La bohème, Il barbiere di Siviglia (conducted by Julius Rudel) and Don Giovanni.
Well-known "pirate" recordings of his include Manon Lescaut (opposite Magda Olivero and Richard Tucker, 1972) and Roberto Devereux (with Carreras, Caballé, and Susanne Marsee, led by Julius Rudel, 1977).
Julius Caesar | Pope Julius II | William Julius Wilson | Julius Caesar (play) | Julius Rudel | John Julius Angerstein | Julius Francis | Julius | Julius Hemphill | Julius Wellhausen | Julius von Pflugk-Harttung | Julius Rosenwald | Julius Nyerere | Julius Erving | Julius Baker | Julius and Ethel Rosenberg | Otto Julius Bierbaum | Julius Wernher | Julius Weise | Julius Streicher | Julius Sachs | Julius Peppers | Julius Oppert | Julius Katchen | Julius Evola | Julius Caesar Scaliger | Johann Friedrich Julius Schmidt | Drusus Julius Caesar | Pope Julius III | Pope Julius I |
She was to appear with that company many times through 1991, including appearances in L'enfant et les sortilèges (as the Fire, directed by John Dexter), the Centennial Gala (the duet from Don Giovanni), La bohème (as Musetta, opposite Plácido Domingo), Les contes d'Hoffmann (as Antonia, conducted by Julius Rudel), Porgy and Bess (as Clara), L'italiana in Algeri (as Elvira) and Don Giovanni (as Zerlina).
Craig has studied and collaborated with prominent artists including Donald Craig, Marenka Gurevitch, Magda Olivero, James de Blasis, Henry Lewis, Jeffrey Tate, Diane Richardson, Joan Dornemann, Martin Katz, Warren Jones, Anton Coppola, and Julius Rudel.
Trogan also taught for several years for at New York University, and privately for prominent individuals and families, including the families of violinist Isaac Stern, actor Richard Burton, diplomat Felix Rohatyn, actor Christopher Plummer, Sarasota Opera director Victor DeRenzi, and New York City Opera conductor Julius Rudel.
MacWatters sang at the New York City Opera from 1946 to 1951, in The Pirates of Penzance (as Mabel, conducted by Julius Rudel), Rigoletto (as Gilda, with Giuseppe Valdengo and Luigi Infantino), Il barbiere di Siviglia (as Rosina, opposite Enzo Mascherini), The Old Maid and the Thief (as Laetitia, with Marie Powers), Le nozze di Figaro (as Susanna), Les contes d'Hoffmann (as Olympia), and Ariadne auf Naxos (as Zerbinetta).