The contralto Katja Boost was born in Wiesbaden and studied with Gertie Charlent and Julia Hamari. Already during her studies, she gave guest performances at Badisches Staatstheater Karlsruhe and Oper Köln. She sang Filipjevna in Tchaikovsky’s Eugene Onegin, directed by Nikolaus Lehnhoff, for the European Union Opera, at Festspielhaus Baden-Baden and Théâtre des Champs-Élysées.
After an engagement in the young ensemble of the Bayerische Staatsoper, she came back to Cologne to sing Ino in Haendel’s Semele, Princesse Clarissa in Prokofiev’s L’Amour des Trois Oranges, Erda, Second Norn and Schwertleite in The Ring of the Nibelung, from Wagner. Then, Katja Boost was invited to perform at Teatro Lirico di Cagliari, Teatro São Carlos de Lisboa, Deutsche Oper Berlin, Oper Köln, Oper Graz, Theater Bremen, Mecklenburgisches Staatstheater Schwerin, Theater Kassel, Theater Aachen, Karlsruhe, Oper Halle, Theater Münster, Landestheater Coburg, and Theater Giessen, among others.
In Wiesbaden, she sang the voice of Cassandra in the premiere of the opera Cassandra-Complex, from Gerhard Stäbler. In addition to the world premiere of Cassandra-Complex, she has already repeatedly dealt with works by modern or rarely performed composers, such as the roles of Abbess in Peter Eötvös' Love and Other Demons, at the Stadttheater Bremerhaven, and Alte Lola in Franz Schreker's Irrelohe, at the Stadttheater Kaiserslautern
On the romantic concert repertoire, the German contralto was acclaimed for her performances in Verdi's Requiem, Beethoven's Missa Solemnis and Mahler's 2nd Symphony. Commissioned by the Goethe-Institut, she made a tour in Asia, singing Mahler's Liedern eines fahrenden Gesellen.
Katja Boost has already collaborated with conductors such as Gerd Albrecht, Philippe Auguin, Marcus Bosch, Matthias Foremny, Will Humburg, Philippe Jordan, Toshiyuki Kamioka, Nicholas Kok, Marko Letonja, Fabio Luisi, Jun Märkl, Markus Stenz, Johannes Stert, Jeffrey Tate, Christian Thielemann and Jonathan Webb; and with the directors Christopher Alden, Andreas Baesler, Robert Carsen, Günter Krämer, Nikolaus Lehnhoff, Wolfram Mehring, Dominik Neuner, Graham Vick, Andrej Woron and Urs Häberli.