 That same year she performed at the Paris Grand Opera as Elisabetta in "Don Carlos".In 1987-1988 Sweet appeared at the Staatsoper in Hamburg as Elisabetta in Verdi's "Don Carlos", Leonora in "Il Trovatore", and Elisabeth in "Tannhauser".She sang at the Staatstheater Braunschweig in 1988 as Desdemona in Verdi's "Othello".