When Günter Henle founded his Urtext publishing company in 1948 he began his catalogue with a two-volume edition (HN 1 and HN 2) of Mozart’s 18 piano sonatas. These sonatas remain part of the core repertory of every pianist. In the intervening decades both volumes have been revised several times in order to keep pace with the current state of research. The latest update, concerning K. 331, the “Alla turca” sonata from volume 2, dates from 2015. The editor’s preface and critical report provide detailed information on all the sources and textual issues. HN 1 and HN 2 include fingerings; we now present both volumes without fingerings, for pianists who want to find their own way into Mozart’s piano universe. Editor: Wolf-Dieter Seiffert, Ernst Herttrich Klaviersonate C-dur KV 330 (300h) Klaviersonate mit türkischem Marsch (Alla Turca) A-dur KV 331 (300i) Klaviersonate F-dur KV 332 (300k) Klaviersonate B-dur KV 333 (315c) Fantasie und Sonate c-moll KV 475/457 Klaviersonate F-dur KV 533/494 Klaviersonate (Facile) C-dur KV 545 Klaviersonate B-dur KV 570 Klaviersonate D-dur KV 576