Ludwig van Beethoven's Piano Concerto No. 1 in C major, Op. 15, was written in 1795, then revised in 1800. It was possibly first performed by Beethoven at his first public concert in Vienna on 29 March 1795. It was first published in 1801 in Vienna with dedication to his pupil Princess Anna Louise Barbara Odescalchi (née Countess von Keglević), known to her friends as "Babette". Although this was Beethoven's first piano concerto to be published, it was actually his third attempt at the genre, following an unpublished piano concerto in E-flat major of 1784 and the Piano Concerto No. 2. The latter was published in 1801 in Leipzig after the Piano Concerto No. 1, but was composed over a period of years, perhaps beginning ca. 1788. Movements As with the Piano Concerto No. 2, this C major concerto reflects Beethoven's assimilation of the styles of Mozart and Haydn, while its abrupt harmonic shifts demonstrate Beethoven's musical personality. It adheres to the concerto variant of sonata form and is scored for solo piano and an orchestra consisting of flute, 2 oboes, 2 clarinets, 2 bassoons, 2 horns, 2 trumpets, timpani, and strings. The flute, oboes, trumpets, and timpani are tacet during the second movement. I. Allegro con brio Tempo: = 144 The first movement is in sonata form, but with an added orchestral exposition, a cadenza, and a coda. It has a main theme repeated many times, and there are several subordinate themes. The orchestral exposition changes keys many times, but the second exposition is mainly in G major. The development starts in E-flat major, then modulates to C minor, which ends with an octave glissando. The recapitulation is in C major. There are three options for the cadenza to this movement, which vary in length and difficulty. The coda is played by the orchestra alone. Performances vary in length from fourteen to eighteen minutes. II. Largo The second movement is in the key of A-flat major, in this context a key relatively remote from the concerto's opening key of C major. If the movement adhered to traditional form, its key would be F major, the subdominant key, or in G major, the dominant key. The clarinets are given an unusually prominent role in this movement, having the melody as often as violins. Like many slow movements, this movement is in ternary (ABA) form. Its opening A section presents several