Brigitte Geller was born and raised in Switzerland. She began studying flute in 1985 and in 1986 singing at the Basel Conservatory (Musikhochschule Basel) and the Opera Studio Zurich (Opernstudio Zuerich). In 1991 she graduated in flute studies as a concert flutist with an orchestra diploma (including teaching diploma). In 1992 she graduated with a soloist diploma in singing studies (including teaching diploma). Upon completion of her studies, she was engaged by the theater.
During her studies she won the Miriam Helin singing competition and twice the Migros scholarship, as well as other competitions.
Upon completion of her studies, she became an ensemble member of the Heidelberg Theater. In the 1997/1998 theatre season, Brigitte Geller joined the ensemble of the Komische Oper Berlin, where she has been ever since.
Among others, she worked under conductors Jakov Kreizberg, Kirill Petrenko, Michael Hofstetter, Markus Poschner, Carl St. Clair, Maurizio Barbacini, Paul Mac Creesh, Marcus Creed, Henrik Nanasy, Vladimir Jurovski, Philip Jordan, Eliahu Inbal, Konrad Junghähnel, Sir John Elliot Gardiner and Ton Koopman.
Brigitte Geller has worked over the years under the stage direction of lke Harry Kupfer, David Alden, Barry Kosky, Hans Neuenfels, Andreas Homoki, Stefan Herheim and Michael Thalheimer.
In addition to her career singing at the Komische Oper Berlin, Brigitte Geller has sung as a guest in the Staatsoper Unter den Linden, in Mannheim, Basel, Zurich, Munich Venice and Vienna.
Since her graduation, Brigitte Geller has been busy not only in opera but also as a concert singer. She participated in music festivals such as the Innsbrucker Festspiele, Bergen Festival, MDR Musiksommer, Bach Cantata Pilgrimage, Stuttgarter Bach Akademie, Rheingau Festival, Dresdener Musikwochen and the Bilbao Festival.