Eiddwen Harrhy studied at the Royal Manchester College of Music, where she won the Imperial League of Opera Gold Medal. She then studied in London, winning the Miriam Licette Prize to further her studies in Paris.
She has sung with major orchestras and opera companies around the world, appearing in Amsterdam, Athens, Buenos Aires, Los Angeles, Milan, Lucerne, Naples, Turin, Rome, Paris, Barcelona, Tel Aviv, St Petersburg, Sydney, Vienna and Hong Kong. Festivals include Glyndebourne, Edinburgh, Aldeburgh, Batignano, Halle, Göttingen, Lucerne, Geneva, Bruges and Hong Kong.
Notable roles include Poppea, Alcina, Iphigenie, Norina, Gilda, Michaela, Pamina, Countess, Donna Anna, Donna Elvira, Fiordiligi, Octavian, Componist, Katya Kabanova, Marenka, Madama Butterfly, Marie (Wozzeck).
Eiddwen has worked with many great conductors, including, Colin Davis, Georg Solti, Bernard Haitink, Mark Elder, John Eliot Gardiner, Roger Norrington, John Pritchard, Christopher Hogwood, Ivor Bolton, Richard Hickok, Mariss Janssons, Marc Minkovski and Phillipe Herreweghe.
Eiddwen Harrhy’s teaching career includes master classes and one-to-one teaching around the world , including Singapore, Prague, Berlin, Vilnius, Utrecht, Helsinki, Stockholm, Vienna, National Opera Studio (London) and USA. She travels to Indiana University every year to work with the students at the prestigious Jacobs School of Music in Bloomington, preparing their performances of Handel operas and oratorios.
She is a Fellow of the Royal College of Music (London) Royal Welsh College of Music and Drama, Royal Society of Arts, and has been awarded an Honorary Doctorate of Letters by the University of Swansea, Wales.