Sonata for Two Pianos (Mozart)

The Sonata for Two Pianos in D major, K. 448 (375a), is a work composed by Wolfgang Amadeus Mozart in 1781, when he was 25. It is written in sonata-allegro form, with three movements. The sonata was composed for a performance he would give with fellow pianist Josepha Auernhammer. Mozart composed this in the galant style, with interlocking melodies and simultaneous cadences. This is one of his few compositions written for two pianos.

Description
The sonata is written in three movements:

1. Allegro con spirito, in D major and common time

2. Andante, in G major and triple time

3. Molto allegro, in D major and duple time


 * Allegro con spirito
 * The first movement sets the tonal center with a strong introduction. The two pianos divide the main melody for the exposition, and when the theme is presented, both play it simultaneously. Little time is spent in the development section; a new theme is introduced (unlike most sonata forms) before the recapitulation, repeating the first theme.


 * Andante
 * The second movement is written in ABA form.


 * Molto allegro
 * The third movement begins with a galloping theme. The cadences used in this movement are similar to those in Mozart's Rondo alla Turca.

Mozart effect
Mozart's K 448 was the composition used in the original study that led to the theory of the so-called Mozart effect, which posited that listening to the piano sonata improved spatial reasoning skills, later widened in pop-science to an increase in IQ in general.