The Italian bass, Giorgio Tadeo, studied with Ettore Campogalliani at the Conservatorio di Parma in October 1952.
Giorgio Tadeo made his debut on September 16, 1953 at RAI as Mefistofele in Faust by Charles Gounod, and succeeded in December at the Politeama of Palermo. He sung at the Teatro alla Scala from 1955 to 1982, at the Piccola Scala from 1958 to 1969, and in other Italian theatres until 1996. Abroad he has sung at the Vienna State Opera, Hamburg, Monaco di Baviera, at the Opéra of Paris, the Covent Garden and the Albert Hall in London, at the Carnegie Hall in New York and the Lyric Opera in Chicago, at the Festival of Aix-en-Provence (for ten years), in Edinburgh, Dallas, Tel Aviv, Atene and Baalbek.
Giorgio Tadeo has worked with the conductors Vittorio Gui, Carlo Maria Giulini, Tullio Serafin, Sergiu Celibidache, Antal Doráti, Oliviero de Fabritiis, Gianandrea Gavazzeni, Nino Sanzogno, Peter Maag, Herbert von Karajan, Claudio Abbado, Roberto Abbado, Pierre Boulez, Tsuneo Osawa, and with the directors Sandro Bolchi, Giorgio Strehler, and Franco Zeffirelli.
Giorgio Tadeo has performed works of the 20th century by Nino Rota, Goffredo Petrassi, Luciano Chailly, Ildebrando Pizzetti and Virgilio Mortari, but above all he has distinguished himself in the repertoire of Mozart, Rossini and Donizetti.
He was married with the soprano Mariella Adani from whom he has had two sons.