Orchestra, and a soloist with the Gibraltar Philharmonic. In addition, Brown made an unexpected appearance with the Opera Company of Philadelphia when she filled in at the last minute in the title role of Strauss' Ariadne auf Naxos. Brown also filled in for an ailing singer for an orchestra rehearsal of Aida at the Metropolitan Opera. The company was so impressed with her work that they immediately called Brown's agent and booked her for two performances of Aida and 12 cover performances for the next season. In the 2004-2005 season, Brown made her critically acclaimed debut at the Metropolitan Opera in the title role of Verdi's Aida. Her performance was so well received that an article about her appeared on the front page of The New York Times on November 8, 2004. Originally she was not scheduled that night to sing, as she had already sung two performances in the scheduled run of Aida and covering the role for the remainder of the run, but she was called to replace the ailing lead that night. Opera News called her performance that of "one of America’s most promising Verdi sopranos". In addition, Brown sang the role of Aida for Opera Company of Philadelphia and followed that with the world premiere of Margaret Garner, a new opera by Richard Danielpour and Toni Morrison, in the role of Cilla for Michigan Opera Theatre and Cincinnati Opera. She also appeared as a guest soloist in a concert of opera arias for Auckland Philharmonia (New Zealand) and Dayton Opera. In the 2005–2006 season, Brown performed the role of Amelia in Verdi's Un Ballo in Maschera and the role of Cilla in Margaret Garner for the Detroit Opera and Opera Company of Philadelphia, the title role in Verdi's Aida for Opera Pacific and Florentine Opera, Verdi's Requiem for the Festival of Saint Denis in France, concerts with the Indianapolis Symphony and Brevard Festival Orchestra, and recitals throughout the United States. In the 2006–2007 season, Brown made her debut with Opéra National de Paris as Amelia in Verdi's Un Ballo in Maschera, sang the title role of Verdi's Aida with Florida Grand Opera for the opening the new Carnival Performing Arts Center, and sang the role of Bess in Gershwin's Porgy and Bess for both Opera Pacific to open the new Orange County Performing Arts Center and the Opera Company of Philadelphia to mark the 150th Anniversary