Made her professional opera debut as Gilda in Giuseppe Verdi's Rigoletto at the Teatro Comunale Giuseppe Verdi in Trieste, Italy. This marked the beginning of her international operatic career.
1988
Achieved international recognition when she made her debut at the Salzburg Festival as Oscar in Giuseppe Verdi's Un ballo in maschera under the baton of Herbert von Karajan. Karajan lauded her voice, establishing her as a major talent on the global stage.
1993
Sumi Jo won a Grammy Award for Best Opera Recording for her performance as the Fairy in Richard Strauss's Die Frau ohne Schatten, conducted by Sir Georg Solti. This prestigious award further cemented her reputation as a leading international coloratura soprano.