The Piano Concerto No. 25 in C major, K. 503, was completed by Wolfgang Amadeus Mozart on December 4, 1786, alongside the Prague Symphony, K. 504. Although two more concertos would later follow, this work is the last of what are considered the twelve great piano concertos written in Vienna between 1784 and 1786. Chronologically the work is the 21st of Mozart's 23 original piano concertos. K. 503 is now widely recognized as "one of Mozart's greatest masterpieces in the concerto genre." However, it had long been neglected in favor of Mozart's more "brilliant" concertos, such as K. 467. Though Mozart performed it on several occasions, it was not performed again in Vienna until after his death, and it only gained acceptance in the standard repertoire in the later part of the twentieth century. Mozart's pupil Johann Nepomuk Hummel valued it, as can be seen in the influence it had on Hummel's own Piano Concerto in C, Op. 36.
Music
The concerto is scored for solo piano, flute, two oboes, two bassoons, two horns in C, two trumpets in C, timpani and strings. It is one of Mozart's longest, with a duration of about 33 minutes. The concerto has the following three movements: While the concerto is frequently compared to the Jupiter Symphony, Girdlestone considers its closest parallel to be the String Quintet in C, K. 515. The expansive first movement is one of Mozart's most symphonic concerto movements. This movement subtly slips in and out of the minor several times. One of the secondary themes of the concerto's first movement is a march that often reminds people of the then-unwritten "La Marseillaise". This theme dominates the development section. Beethoven references this concerto in his own Fourth Piano Concerto. In addition, the famous motif in the first movement of Beethoven's Fifth Symphony resembles one found in this concerto. Also, Mozart's 25th and Beethoven's 5th concerti have a strong march-like theme in the first movement that is first played in minor and then soon appears gloriously in major. The tranquil second movement is in sonata form, but lacks a development section. It extensively uses the winds. The third movement is a sonata-rondo that opens with a gavotte theme from Mozart's opera Idomeneo. Girdlestone considers this movement to be very serious-minded. Like the first movement, it touches upon the minor; however, it ends assuredly and joyfully.
Critical reception
In 1798, music criticJohann Friedrich Rochlitz described K.503 as "the most magnificent and difficult of all hitherto known concertos" and " the most magnificent of all the concertos which have ever been written." According to Simon P. Keefe, K. 503 is now regarded "by common consent one of Mozart's greatest masterpieces in the concerto genre." It is often viewed as a "kindred spirit" or "the rival and the complement" of Mozart's great C minorpiano concerto, K. 491, completed a few months prior. Keefe mentions and quotes Donald Tovey, Cuthbert Girdlestone, and Alfred Einstein as among the musicologists who uphold K. 503 as exemplary.