Piano Concerto No. 20 (Mozart) - Movements

Movements

The concerto is scored for solo piano, flute, two oboes, two bassoons, two horns, two trumpets, timpani and strings. As is typical with concertos, it is in three movements:

1. Allegro
2. Romanze
3. Allegro assai

The first movement starts off the concerto in the dark tonic key of D minor with the strings restlessly but quietly building up to a full forte. The theme is quickly taken up by the piano soloist and developed throughout the long movement. A slightly brighter mood exists in the second theme, but it never becomes jubilant. The timpani further heightens the tension in the coda before the cadenza. The movement ends on a quiet note.

The 'Romanze' second movement is a five-part rondo (ABACA) with a coda. The beginning features a solo piano playing the flamboyant and charming main B-flat major melody without accompaniment. This lyrical, passionate, tender and romantic melody, played at a relatively dainty tempo, paints a picture of peace and a sense of harmony between the piano and the orchestra, and has also inspired its title 'Romanze'. Halfway through, the piece moves on to the second episode (part C), where the beautiful melody is replaced with a turbulent, agitated and ominous theme in the relative minor key of G minor, which greatly contrasts the peaceful mood at the starting of the movement. Finally, we are greeted once again with the aforeheard melody which returns as the movement is nearing the end. The piece ends with an ascending arpeggio that is light and delicate, gradually until it becomes a faint whisper. The 'Romanze' movement is testament to Mozart's brilliant facility with not just exciting and bold music, but also gentle and melodious sounds that can really touch the listener's soul.

The final movement, a rondo, begins with the solo piano rippling upward in the home key before the full orchestra replies with a furious section. (This piano "rippling" is known as the Mannheim Rocket and is a string of eighth notes (d-f-a-d-f) followed by a quarter note (a). A second melody is touched upon by the piano where the mood is still dark but strangely restless. A contrasting cheerful melody in F major ushers in not soon after, introduced by the orchestra before the solo piano rounds off the lively theme. A series of sharp piano chords snaps the bright melody and then begin passages in D minor on solo piano again, taken up by full orchestra. Several modulations of the second theme (in A minor and G minor) follow. Thereafter follows the same format as above, with a momentary pause for introducing the customary cadenza. After the cadenza, the mood clears considerably and the bright happy melody is taken up this time by the winds. The solo piano repeats the theme before a full orchestral passage develops the passage and thereby rounding up the concerto with a jubilant D major finish.