The German soprano Sumi Kittelberger started her career as a member of the international opera studio at the Zürich Opera , where she worked with John E. Gardiner and Michael Pountney. From 2007 to 2012 she was a soloist at Lucerne Theater. Focussing on the high coloratura repertoire, her roles included Queen of the night (Die Zauberflöte), Sonnambula and Olympia (Les Contes d’Hoffmann). In 2012 and 2013 she was working as a soloist at Theater St.Gallen where she sang Oscar (Un ballo in maschera), Serpetta (La Finta Giardiniera) and Ciboletta (Eine Nacht in Venedig). Other engagements include the Staatstheater Kassel, Theater Ulm, Chamber Opera Frankfurt and Opera Theatre Connecticut.
As a concert singer she was invited to many festivals such as the Schwetzinger Festspiele and gave a concert at Carnegie Hall. In 2005 Sumi Kittelberger was one of sixteen singers invited to work with Naxos Records and Yale University in a collaborative project to record the complete songs of Charles Ives.
Sumi Kittelberger holds a diploma from the University of Music Karlsruhe (Roland Hermann) and a Masters degree from Yale University (Doris Yarick-Cross) and participated in master classes with Francisco Ariza, Edith Wiens, Hartmut Höll and Alan Held. Currently, she is working with Irina Gavrilovici (Vienna).
Mrs.Kittelberger was a Fulbright Scholar, Daad-Scholar and a member of the Studienstiftung des deutschen Volkes (German National Academic Foundation).