| Piano Concerto in C major | |
|---|---|
| No. 21 | |
| by W. A. Mozart | |
 First page of the autograph manuscript | |
| Key | C major |
| Catalogue | K. 467 |
| Composed | 1785 |
| Movements | Three (Allegro maestoso, Andante, Allegro vivace assai) |
| Scoring |
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The Piano Concerto No. 21 in C major, K. 467, was completed on 9 March 1785 by Wolfgang Amadeus Mozart, four weeks after the completion of the previous D minor concerto, K. 466. [1] [2]
The autograph manuscript of the concerto is preserved in the Morgan Library & Museum.
The concerto is scored for solo piano, flute, two oboes, two bassoons, two horns in C, two trumpets in C, timpani and strings.
The concerto has three movements:
The opening movement begins quietly with a march figure, but quickly moves to a more lyrical melody interspersed with a fanfare in the winds. The music grows abruptly in volume, with the violins taking up the principal melody over the march theme, which is now played by the brass. This uplifting theme transitions to a brief, quieter interlude distinguished by a sighing motif in the brass. The march returns, eventually transitioning to the entrance of the soloist. The soloist plays a brief Eingang (a type of abbreviated cadenza) before resolving to a trill on the dominant G while the strings play the march in C major. The piano then introduces new material in C major and begins transitioning to the dominant key of G major. Immediately after an orchestral cadence finally announces the arrival of the dominant, the music abruptly shifts to G minor in a passage that foreshadows the main theme of the Symphony No. 40 in that key. [4] A series of rising and falling chromatic scales then transition the music to the true second theme of the piece, an ebullient G major theme, which can also be heard in Mozart's Third Horn Concerto.[ citation needed ] The usual development and recapitulation follow. There is a cadenza at the end of the movement, although Mozart's original has been lost.
The Andante movement, in the subdominant key of F major, is in three parts. The opening section is for orchestra only and features muted strings. The first violins play a dreamlike melody over an accompaniment consisting of second violins and violas playing repeated-note triplets and the cellos and bass playing pizzicato arpeggios. All of the main melodic material of the movement is contained in this orchestral introduction, in either F major or F minor. The second section introduces the solo piano and starts off in F major. It is not a literal repeat, though, as after the first few phrases, new material is interjected which ventures off into different keys. When familiar material returns, the music is now in the dominant keys of C minor and C major. Then it modulates to G minor, then B-flat major, then F minor, which transitions to the third section of the movement. The third section begins with the dreamlike melody again, but this time in the relative key of F major's parallel key, A-flat major. Over the course of this final section, the music makes its way back to the tonic keys of F minor and then F major and a short coda concludes the movement.
The final rondo movement begins with the full orchestra espousing a joyous "jumping"[ This quote needs a citation ] theme. After a short cadenza, the piano joins in with a theme reminiscent of the finale of Michael Haydn Symphony No.18 in C major [ citation needed ] and further elaborates. A "call and response" style is apparent, with the piano and ensemble exchanging themes. The soloist plays scale and arpeggio figurations that enhance the themes, as well as a short cadenza that leads back to the main theme. The main theme appears one final time, leading to an upward rush of scales that ends on a triumphant note.
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