Piano Concertos K. 107 (Mozart) Piano Concertos K. 107 (Mozart) The Piano Concertos, K. 107 are three keyboard concertos by Wolfgang Amadeus Mozart, based on sonatas by Johann Christian Bach. These sonatas are from J.C. Bach's Op. 5; Mozart turned Sonata No. 2 in D, Sonata No. 3 in G, and Sonata No. 4 in E from this set into the three concertos of K. 107. These concertos remained unpublished in the Alte Mozart-Ausgabe, the first complete edition of Mozart's works, so they were not given a number by the publishers of that edition, Breitkopf & Härtel (as the other 27 concerti were given in
Piano concertos by Wolfgang Amadeus Mozart the concertos in recent years, notably by Philips and Naxos, some of the less-well known concertos may also increase in popularity. The first four concertos are only orchestrations of works by other composers; Gutmann calls these "juvenilia." Gutmann also calls "simplistic" the Concerto for three (or two) pianos and orchestra. With these exceptions, Gutmann writes of Mozart that "all of his mature concertos have been acclaimed as masterpieces". For example, he says Mozart liked his first original concerto, his fifth (K. 175), written at age 17, and performed it through the rest of his life. The discography for Mozart's piano