in the title role of Verdi's Aida and her debut with Connecticut Grand Opera in the title role of Puccini's Tosca. In 1989 she made debuts at the Metropolitan Opera and the San Francisco Opera both in the title role of Verdi's Aida. She also performed and recorded the role of Maria in Richard Strauss' Friedenstag with Robert Bass and the Collegiate Choral and Orchestra at Carnegie Hall. That same year, she performed the title role of Ariadne in Ariadne auf Naxos at the Washington Concert Opera. In 1992, she resumed the title role of Richard Strauss' Ariadne auf Naxos in her debut at the Vienna State Opera and her debut at the Rome Opera in the title role of Verdi's Aida. She also made her debut with Grand Théâtre de Bordeaux as Elisabeth in Verdi's Don Carlo and sang Turandot with the Opera Company of Philadelphia. In 1993, Marc opened up the Ravinia Festival with the Chicago Symphony Orchestra. In 1994, Marc made her debut at the Royal Opera House, Covent Garden in the title role of Puccini's Turandot. She also sang Beethoven's Ninth Symphony with Christoph Eschenbach and the Boston Symphony Orchestra at the Tanglewood Music Festival. In 1995 Marc gave a critically acclaimed recital of Handel, Mozart and Bellini arias at the Mostly Mozart Festival, gave a concert of the works of Verdi and Ravel with the New Jersey Symphony Orchestra, and sang the role of Chrysothemis in Strauss' Elektra with the Chicago Symphony. In 1996, she sang Turandot with Opera Pacific. In 1998 she sang Turandot with the Milwaukee Symphony and with Michigan Opera Theatre. She also gave a concert of arias with the Dallas Symphony and sang the role of Brünnhilde in Wagner's Die Walküre with Rome Opera. In the 2005–2006 season, Marc performed the title role in Puccini's Turandot with Zubin Mehta and the Maggio Musicale Fiorentino, and reprised the role with the same company in the 2006–2007 season at the New National Theatre in Tokyo. In 2007, she also performed the title role in Richard Strauss' Salome with Orquestra Nacional do Porto. In the 2007–2008 season, Marc made appearances at the Washington National Opera with Plácido Domingo conducting and at the Kennedy Center with the Choral Arts Society of Washington. She also gave several recitals throughout the United States. Among other appearances in the 2008–2009 season, she sang with the National Gallery Orchestra