Clara Schumann was the pianist when Johannes Brahms' Quartet No. 1 for Piano, Violin, Viola, and Cello in G Minor, Opus 25 made its concert debut In Hamburg, Germany. The composer himself performed the work exactly a year later in Vienna.  (By John Osborne)   
Source Citation
              Leon Botstein, ed., The Compleat Brahms: a guide to the musical works of Johannes Brahms (New York: W.W. Norton & Company, Inc, 1999), 116. 
Record Data
Date Certainty
              Exact
          Type
          Education/Culture