Fischer made significant studio recordings in the 1950s with Otto Klemperer and Wolfgang Sawallisch, but felt that any interpretation created in the absence of an audience would necessarily be artificially constricting, since no interpretation was ever "finished." Her legacy today thus includes many live concert recordings that have been released on CD and DVD (including a performance of Beethoven's "Emperor" concerto available on YouTube, and a Beethoven Third Concerto with Antal Doráti conducting). Her greatest legacy, however, is a studio-made integral set of the complete Beethoven piano sonatas.