In 1956, the mezzo-soprano filmed Mistress Quickly, in Falstaff, for RAI, conducted by Tullio Serafin and directed by Herbert Graf, with Giuseppe Taddei and Scipio Colombo.
Although generally considered a formidable actress and singer in her own right, she is now mostly remembered for regularly partnering Maria Callas on- as well as off-stage during the 1950s.
Many of their collaborations (together with other regular partners Giuseppe Di Stefano, Boris Christoff, Tito Gobbi, Rolando Panerai, and Tullio Serafin) were recorded by Fonit Cetra ("La Gioconda", 1952) and EMI.
Her most famous portrayals included Amneris in Aïda, with Jussi Björling, Azucena in Il trovatore, Quickly in Falstaff, Eboli in Don Carlo, and Ulrica in Un ballo in maschera.
Her 1951 performance of the Verdi Requiem, with Herva Nelli, di Stefano and Cesare Siepi, conducted by Arturo Toscanini, was issued by RCA.