Wolfgang Amadeus Mozart's Piano Sonata No. 14 in C minor, K 457 is a sonata in three movements: Wolfgang Amadeus Mozart (baptized as Johannes Chrysostomus Wolfgangus Theophilus Mozart; January 27, 1756 – December 5, 1791) was a prolific and highly influential composer of Classical music. ...

1. Molto allegro
2. Adagio
3. Allegro assai

The C Minor Sonata is the most dramatic of the Mozart piano sonatas, and the only one to be composed in a minor key besides the great Piano Sonata No. 8 in A Minor (K. 310), which was written six years earlier, around the time of the death of Mozart's mother. The opening movement of the C Minor Sonata is symphonic in its conflict, while the spacious second movement makes use of a theme remarkably similar to that of the second movement, "Andante cantabile," of Beethoven's own great C minor sonata, the Piano Sonata No. 8 in C minor, "Pathetique". Indeed, Mozart's sonata feels in several ways prophetic of the Pathétique (which it pre-dates by roughly fifteen years), and both works share a similar overall plan. In performance, Mozart's sonata is often accompanied by the Fantasy No. 4, K. 475, which is also in C minor and which was published together with the sonata. It is said, that Mozart wrote the Fantasia as a reconstruction of the improvisation he made before writing the sonata. Allegro is: a direction in musical notation indicating that the music is to be played fast and lively. ... In musical notation, Adagio is a tempo marking indicating that the music is to be played slowly. ... In musical terminology, tempo (Italian for time) is the speed or pace of a given piece. ... Wolfgang Amadeus Mozarts Piano Sonata No. ... Ludwig van Beethovens Piano Sonata No. ...