Tatjana Gsovsky was an internationally known ballet dancer and choreographer who was ballet mistress of the Berlin State Opera, Teatro Colón, Deutsche Oper Berlin and Oper Frankfurt. An influential teacher, she is remembered for first choreographies of works by contemporary composers including Boris Blacher, Werner Egk, Hans Werner Henze, Giselher Klebe, Luigi Nono and Carl Orff.

Boris Blacher was a German composer and librettist.