Piano Sonata No. 13 (Mozart)

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The Piano Sonata in B-flat major by Wolfgang Amadeus Mozart is K. 333 in Ludwig von Köchel's catalogue of Mozart's works.

The first movement shows a playful and lively tune very familiar. The melody starts with a simple classical tune accompanied by the arpeggio-style chords played by the left hand. As the first few bars establish, the level gets higher and eventually restarts from a relatively lower level. The theme is repeated but then it varies and the climax builds slowly and end with an arpeggio of G Major. The mood softens and a phrase is established which will be repeated 2 times in this key, but varied slightly by key. The first part slowly ends with the familiar arpeggio with the chord played (brokenly) and repeatedly.

The second part is introduced by varying the theme three times which leads to a minor key. It slowly establishes back to B-flat with a small spark that played the theme in minor key for a short time then slowly it builds up to a higher key.

The third part repeats the 1st part but in a higher key with few variations. It ends on the same key with a slight minor key change in the last few bars but building up to the key in time to end the first movement.

The second movement starts in a major key and slowly moves down to a minor. The tempo does not change too much as piece is played. The second part establishes in a minor key. The third part plays the theme in a higher key. The theme played is not too similar to any of the other movements. This movement ends similarly as it started.

The third movement shows much similarity to the first by chord pattern and by music phrases. It starts simpler but playfully. The level of difficulty increases with the time. The theme is repeated but with the familiar broken chord accompanying the melody. The mood slowly softens but then it quickly establishes to a difficult melody. It ends with a climax building up.

Now comes the second part expectedly. The first part is repeated all over until the part where it will previously establish the difficult part. It changes course to introduce a minor key. It then plays two phrases which will be repeated in different keys. The third part comes in quickly and unexpectedly. It slowly plays to a part where the major and minor keys take turn per few bars. It slowly establishes back to major key where it repeats the first part for the second time. Variations are spliced in between where similar chord patterns are shifted to a major key. A few parts occur where minor keys suddenly come in. This part shows the very difficult parts of the whole sonata. The keys shift to a higher key (major) where some very familiar phrases from the first part are varied. The difficulty of the notes change slightly. It continues with familiar phrases adapted from the first movement. Then comes a series of arpeggios which shows a very high level of difficulty. Only a few minor keys come in. A short pause comes and enter the first theme (repeated for the third time) but with accompaniment variations. It ends with the same key.

Piano Sonatas by Wolfgang Amadeus Mozart
C Major K. 279 | C Major K. 280 | B flat Major K. 281 | E flat Major K. 282 | G Major K. 283 | D Major K. 284 | C Major K. 309 | A Minor K. 310 | D Major K. 311 | C Major K. 330 | A Major K. 331 | F Major K. 332 | B flat Major K. 333 | C Minor K. 457 | F Major K. 533/494 | C Major K. 545 | F Major K. 547a | B flat Major K. 570 | D Major K. 576