Descriptif : “Mr. Mozart, Kapellmeister, wishes to announce to the most worthy public the appearance in print of three of his recently contrived piano concertos. ' ' These three concertos may be performed not only with a large orchestra including wind instruments, but also a quattro, that is, with two violins, one viola and violoncello. ' ' They will be issued early in April of this year (1783) …”' ' As this advertisement shows, it was Mozart’s intention to keep the accompaniment part flexible in his piano concertos K. 413–5 and, as we know from a letter Mozart wrote to his father, in K. 449 as well.' ' In addition to large orchestral forces it is also possible to use a chamber setting with string instruments, one to a part. ' ' Our chamber music edition (BA 4877) accomodates this option, thereby enriching Mozart’s chamber music with piano.' ' This piano reduction of Mozart’s Piano Concerto in A major K. 414 is based on Christoph Wolff’s Urtext edition, which was published in the New Mozart Edition (NMA V/15: Konzerte für ein oder mehrere Klaviere und Orchester mit Kadenzen, Volume 3,Kassel etc. 1976; BA 4575). In the present arrangement for two pianos, the solo part is unchanged and thus identical with the version in the NMA. ' ' The piano arrangement adheres to the' original orchestral score. Detailed information regarding the origin and history of the work and its sources as well as the editorial principles of the NMA are found in the Vorwort and' Kritischer Bericht of NMA V/15/3.