From 1983 to 1988 he will also regularly collaborate with the Teatro Regio di Parma. He collaborated with Herbert von Karajan, Leonard Bernstein, Gianandrea Gavazzeni, Tullio Serafin, James Levine, Zubin Mehta, Georges Pretre, Carlo Maria Giulini, Claudio Abbado, Riccardo Muti, Riccardo Chailly, Pierre Boulez, Carlos Kleiber. The orchestra conducting was alternated with the choral conducting and in this role he performed at the Scala in Milan, at the San Carlo in Naples, at the Opera of Rome, at the Regio of Parma, at the Comunale of Bologna, at the Verdi of Trieste, at the Zarzuela and the Teatro Real of Madrid, at the Colón of Buenos Aires, at the Municipal of Rio de Janeiro; he has also directed in Paris, Berlin and the rest of Europe, as well as in the United States of America. In 1998 he was invited to the Metropolitan in New York for the choral preparation of Moses und Aron by Schonberg. In 2001 he returned to work with Claudio Abbado for Simon Boccanegra in Parma with the Giuseppe Verdi Symphonic Choir of Milan. In September 1998 he founded the Giuseppe Verdi Symphonic Choir of Milan: a vocal ensemble of about 100 elements that regularly participates in the programming of the season of the Giuseppe Verdi Symphony Orchestra of Milan. He was last seen on the podium of the Symphonic Orchestra and Symphonic Choir of Milan Giuseppe Verdi in the Missa in C minor by Wolfgang Amadeus Mozart, on 19, 20 and 22 January 2006, at the Auditorium in Milan. He, suffering from heart and undermined by diabetes, ceased to live suddenly on February 18, 2006, at his home in Medesano.