Piano Concerto No. 18 (Mozart)

For years, historical speculation was that Mozart had written this concerto for Maria Theresia von Paradis, based on a letter written around that time by Leopold Mozart to his daughter Nannerl. However, Hermann Ullrich has discounted this theory, based on the date of entry in Mozart's catalogue and the fact that von Paradis had left Paris at the start of October 1784, which indicated that there was not sufficient time to send her the concerto for performance. == Music ==

The work is orchestrated for solo piano, flute, two oboes, two bassoons, two horns (in B, second movement in G), and strings. Its movements are: The slow movement is a theme and variations. Martha Kingdon Ward has commented that the slow movement of this concerto contains one of the "most tranquil" of Mozart's flute solos, specifically in the G-major variation. M. S. Cole has noted Mozart's use of meter changes in the finale, starting at measure 171, from to in the winds, with the piano following at measure 179. This changing of tempo in rondo finales was contrary to common practice at the time. Joel Galand has performed a Schenkerian analysis of the rondo finale and noted features such as its novel use of Neapolitan chord| as a remote key. In practical terms, this means that the last movement leaves the home key of B-flat major for an episode in the apparently-unrelated key of B minor and changes metre while maintaining the same beat – a highly unusual procedure in the musical language of the time. Mozart wrote out two cadenzas for the first movement. Joseph Swain has performed a Schenkerian analysis of each first-movement cadenza. == References ==