Sunhae Im was born in South Korea. She studied at the College of Music/Seoul National University and with Roland Hermann at the Hochschule für Musik in Karlsruhe.
She won First Prize at the Korean Schubert Society Competition and the Grand Prix of the tenth Korean Youth and Music Competition. In May 2000 Sunhae Im was finalist in the Reine Elisabeth Song Competition in Brussels.
Sunhae Im made her operatic debut in 1999 at the Frankfurt Opera as Barbarina in Mozart's Nozze di Figaro and Valetto and Amor in Monteverdi's L'incoronazione di Poppea. For three years she was a member of the Hanover Opera where she could be heard as Zerlina, Blondchen in Entführung aus dem Serail, Barbarina in Le nozze di Figaro, Papagena in Die Zauberflöte, Adele in Die Fledermaus, Cupido in Offenbach's Orpheus and Yniold in Pelleas et Mélisande.
She was also invited to sing Adele in Hamburg, Yniold in Pelleas et Mélisande in Berlin, Stuttgart and at the Edinburgh Festival, Les Paladins by Rameau in Basel and in 2005 Orfeo ed Euridice by Gluck in Paris. René Jacobs was the conductor of Conti's Don Chiscotte in Sierra Morena at the Festival "Für alte Musik" in Innsbruck as well as Servilia in La clemenza di Tito in Brussels, Paris, Cologne and Berlin. She also appeared with Fabio Biondi in Handel's Silla in Rom, in Mozart's Ascanio in Alba in Parma and London, and in Vivaldi's Bajazet in Parma and Yokohama. At the Festival in Innsbruck and Baden-Baden she sang Zerlina in Don Giovanni, Eurilla in Orlando Paladino by Haydn and Der geduldige Sokrates by Telemann, again with René Jacobs, Orfeo ed Euridice and Marienvesper by Monteverdi in Berlin, Vienna and Frankfurt. In April 2008, Ms. Im made a much acclaimed debut with conductor Manfred Honeck as Ilia in Idomeneo at the Stuttgart Opera. She also sang this role with René Jacobs in Paris, Brussels, Valladolid and Cologne. With Thomas Hengelbrock Ms. Im sang Amor in Gluck's Orpheus in Paris and Epidaurus and with René Jacobs in Vienna as well as Celia in Lucio Silla in Stuttgart.
In addition to her operatic work, Sunhae Im has worked with such renowned conductors as Philippe Herreweghe (Antwerpen, Berlin, Baden-Baden) Frans Brüggen (Florence, Lucca, Berlin and Munich), Herbert Blomstedt (Dresden and Leipzig), Kent Nagano (Berlin), Riccardo Chailly (Milan), William Christie (Festival d'Aix-en-Provence, Lyon, Paris, Strasbourg, Granada, Washington, Chicago and New York), Sylvain Cambreling (Bad Ems), Michael Gielen (Berlin) Lothar Zagrosek (Berlin), Sigiswald Kuijken (Weimar, Paris, Lucerne, Lausanne, Valladolid), Christopher Hogwood (Berlin) and Marek Janowski (Berlin). Her versatile concert repertoire includes the Passions of Bach and Handel, Mozart concert arias and Masses, as well as Haydn's Creation and The Seasons.