Mozart Piano Quartet in G minor K478 and Piano Quartet in Eb major K493. Two extraordinary works which enrich Mozart's creativity in the field of chamber music and gave the piano quartet genre the crucial initial impetus which affected the romantic compositions by Beethoven and Brahms. In both works he created a piano part which is figurative, concertante and technically demanding without breaching the limits of unity. All facets of these two piano quartets, which are unique but nevertheless characteristic of Mozart's personal style, are compellingly communicated in the interpretation by Christian Zacharia's, Frank-Peter Zimmermann, Tabea Zimmermann and Tilmann Wick.