She made her debut with the company on February 22, 1965 as Ortlinde in Richard Wagner's Die Walküre with Birgit Nilsson as Brünnhilde, Jon Vickers as Siegmund, Leonie Rysanek as Sieglinde, George London as Wotan, and Irene Dalis as
Tozzi was the recipient of three Grammy Awards: in 1960 the Grammy Award for Best Classical Performance, Operatic or Choral for The Marriage of Figaro with Erich Leinsdorf; in 1961 the Grammy Award for Best Opera Recording for Puccini's Turandot, with Erich Leinsdorf; and in 1963 the Grammy Award for Best Opera Recording for Georg Solti's recording of Verdi's Aida (with Leontyne Price and Jon Vickers).
In 1967, his Escamillo in Carmen was filmed, conducted and directed by Herbert von Karajan, and also starring Grace Bumbry and Jon Vickers.
He was noticed by famed opera tenor Jon Vickers, who encouraged Schroeck to pursue his own career in opera.
Jon Corzine | Jon Stewart | Vickers Viscount | Jon Pertwee | Vickers | Jon Anderson | Jon Voight | Jon Krakauer | Jon | Jon English | Vickers Wellington | Jon Bon Jovi | Jon Vickers | Jon Lord | Jon Langford | Diana Vickers | Vickers Vimy | Jon Brion | Vickers machine gun | Jon Huntsman, Jr. | Jon Faddis | Jon Tester | Jon Ronson | Jon Fishman | Uli Jon Roth | Metropolitan-Vickers | Jon Foreman | Jon Hendricks | Jon Fosse | Vickers Limited |
Many singers have made their American debut in Dallas, such as Montserrat Caballé, Plácido Domingo, Gwyneth Jones, Waltraud Meier, Magda Olivero, Joan Sutherland, and Jon Vickers.
At that theatre, he has since been seen in Gianni Schicchi (as Rinuccio, 1975), Don Pasquale (as Ernesto, directed by John Dexter, 1979), Fidelio (as Jaquino, with Jon Vickers as Florestan, 1980), Wozzeck (as Andres, opposite Anja Silja, 1980), Don Giovanni (as Don Ottavio, 1994), Die Fledermaus (as Alfred, 1995), etc.
While there he conducted the U.S. debuts of such singers as Teresa Berganza, Montserrat Caballé, Plácido Domingo, Gwyneth Jones, Magda Olivero, Dame Joan Sutherland, Jon Vickers, and stage director Franco Zeffirelli.
Famous Otellos of the past have included Tamagno, the role's trumpet-voiced creator, as well as Giovanni De Negri, Albert Alvarez, Francesc Viñas, Giuseppe Borgatti, Antonio Paoli, Giovanni Zenatello, Renato Zanelli, Giovanni Martinelli, Aureliano Pertile, Francesco Merli, Giacomo Lauri-Volpi, Frank Mullings, Leo Slezak, Jose Luccioni, Ramón Vinay, Mario Del Monaco, James McCracken, Jon Vickers and Carlo Cossutta.