 He made his operatic debut as a countertenor that same year as Armindo in a New York City Opera production of "Partenope" by Handel.Two months later he substituted for David Daniels, who was taken ill during an international concert tour.Mehta regularly performs the great roles of his repertoire with leading opera houses such as Covent Garden, Bayerische Staatsoper, Opéra National de Paris, Théâtre du Châtelet, La Scala, Theater an der Wien, Berliner Staatsoper, Théatre de la Monnaie, Netherlands Opera, Barcelona Liceu, Teatro Real in Madrid, Metropolitan Opera, Chicago Lyric Opera, Los Angeles Opera, San Francisco Opera, and New York City Opera.