Sarah Castle was born in New Zealand and studied at the Royal Northern College of Music in Manchester, where she won the Brigitte Fassbänder Prize for Lieder interpretation. Her rôles include Octavian, the title-rôle in Gluck’s Iphigénie en Tauride, Dorabella, Cherubino, Lucretia in Britten’s opera, Hänsel, Popova in Walton’s The Bear, and Olga in Eugene Onegin. She sang in the première of Maxwell Davies’s Caroline Mathilde Ballet Suite No. 2 and in Mark-Anthony Turnage’s Twice through the Heart, and made her début at the Proms. Her début for the Royal Opera at Covent Garden in 2001 was as Tisbe in La Cenerentola. She has also appeared there in Der Ring des Nibelungen as Siegrune in Die Walküre, and Flosshilde in Das Rheingold and Götterdämmerung. In the same year she made her débuts at La Monnaie in Brussels and at the Amsterdam Concertgebouw. At Klagenfurt she sang the title-rôle in Handel’s Teseo and has appeared with the New Zealand Opera as Cherubino and at Stuttgart also as Oberto in Alcina. She has appeared with the Bavarian State Opera, San Francisco Opera, Teatro Real Madrid, Philadelphia Opera, Opera Australia and New Israeli Opera. For the Bayreuth Festival she sang Flosshilde and Grimgerde and for the Spoleto Festival in the United States she appeared as Andronico in Tamerlano and as The Composer in Ariadne auf Naxos.