Joshua was born in Cardiff and studied at the Royal College of Music. After completing her studies there, she made her debut at the Aix-en-Provence Festival as Angelica in Handel's Orlando. Other early operatic appearances were Zerlina in Don Giovanni with Scottish Opera, and both Susanna in Le nozze di Figaro and Sophie in Der Rosenkavalier for English National Opera. She has gone on to sing major soprano roles in many of the world's leading opera houses and festivals, including Adèle in Die Fledermaus at the Metropolitan Opera, New York; the title role in The Cunning Little Vixen at La Scala, Milan and De Nederlandse Opera in Amsterdam; Anne Trulove in The Rake's Progress at the Glyndebourne Festival, and Zerlina at the Royal Opera House, Covent Garden.
She has appeared in concert across Europe and throughout the UK. Her discography includes, for Chandos Records, the title roles in Handel's Partenope and Semele, Sophie in highlights from Der Rosenkavalier, and the solo in Mahler's 4th Symphony with Philippe Herreweghe conducting the Orchestre des Champs-Elysées. In 2012 she recorded Harmonia Sacra, a collection of fairly unknown spiritual songs composed by Henry Purcell (Aparte APO27/harmonia mundi).
In September 2014 Rosemary Joshua was named as the new artistic leader of the Dutch National Opera Academy, which came to an end in April 2015 after it became clear that the views on the future of DNOA of Joshua and the Board of directors of DNOA started to diverge.  
Notes and references
- Dominic McHugh, Rosemary Joshua on ENO's Partenope, specialising in Handel and her career so far, Musical Criticism, 18 October 2008. Accessed 1 April 2009.
- "Dierenopera als prentenboek" (Animal Opera as a story book) De Telegraaf, 13 January 2011
- Andrew Clements. Review: Mahler: Symphony No 4. The Guardian, 3 February 2011
- "Rosemary Joshua and DNOA", 7 April 2015
- "Rosemary Joshua en DNOA", 7 April 2015
- Rosemary Joshua on Maxine Robertson Management, Ltd. Accessed 1 April 2009.
- Interview and Profile on www.fanfaire.com. Accessed 1 April 2009.
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