The work follows the form of a standard
piano concerto, constructed into three movements. The end of the second movement leads directly into the third without interruption.
I. Allegro ma non tanto The first movement is in
sonata-allegro form. The piece revolves around a
diatonic melody which Rachmaninoff claimed "wrote itself". The theme soon develops into complex and busy pianistic figuration. : The second theme opens with quiet exchanges between the orchestra and the piano before fully diving into the second theme in
B major. The first part of the first theme is restated before the movement is pulled into a loud development section in
C minor which opens with toccata-like quavers in the piano and reaches a loud chordal section. The whole development exhibits features similar to a canon, such as an eighth note passage in the piano in which the left hand and the right hand play overlapping figures. The movement reaches a number of ferocious climaxes, especially in the
cadenza. {{Image frame|caption=Portion of the original cadenza (
ossia) \relative c'' { \new PianoStaff 4.^\markup{\bold{Allegro molto}}-> 8 4.-> 8 4.-> 8 4.-> 8 4.-> 8 4.-> 8 } \\ { r8 4-- r8 4-- r8 4-- r8 4-- r8 4-- r8 4-- } >> } \new Staff { \key f \major \clef bass 4.-> 8 4.-> 8 4.-> 8 4.-> 8 4.-> 8 4.-> 8 } \\ { r8 4-- r8 4-- r8 4-- r8 4-- r8 4-- r8 4-- } >> } >> }}} Rachmaninoff wrote two versions of this cadenza: the chordal original, which is commonly notated as the
ossia, and a second one with a lighter,
toccata-like style. Both cadenzas lead into a quiet solo section where the flute, oboe, clarinet and horn individually restate the first theme of the exposition, accompanied by delicate
arpeggios in the piano. The cadenza then ends quietly, but the piano alone continues to play a quiet development of the exposition's second theme in
E major before leading to the recapitulation, where the first theme is restated by the piano, with the orchestra accompanying, soon closing with a quiet, rippling coda reminiscent of the second theme.
II. Intermezzo The second movement is constructed around a
theme and variations, in an ABACA form, while shifting around various home keys. The theme and first two variations are played by the orchestra alone. The piano then plays several variations with and without the orchestra. : After the first theme development and recapitulation of the second theme, the main melody from the first movement reappears, before the movement is closed by the orchestra in a manner similar to the introduction. The piano ends the movement with a short, violent "cadenza-esque" passage which moves into the last movement
without pause. Many melodic thoughts of this movement allude to Rachmaninoff's
second piano concerto, third movement, noticeably the Russian-like E major melody. The movement ends with tutti chords leading into the 3rd movement
attacca.
III. Finale The third movement is in a modified sonata-allegro form, and is quick and vigorous. : {{Image frame|caption=The ending four-note figure in the solo piano part of the finale \new PianoStaff 4-> a8 a 4-> r r2 \bar "|." } \new Staff { \clef bass \key d \major \relative c, { \partial 4*3 r4 4-> a8 a 4-> r r2 \bar "|." } } >> }} The movement contains variations on many of the themes that are used in the first movement, which unites the concerto cyclically. However, after the first and second themes it diverges from the regular
sonata-allegro form. There is no conventional development; that segment is replaced by a lengthy digression in E major, which leads to the two themes from the first movement. After the digression, the movement recapitulation returns to the original themes, building up to a toccata climax somewhat similar but lighter than the first movement's
ossia cadenza and accompanied by the orchestra. The movement concludes with a triumphant and passionate second theme melody in D major. The piece ends with the same four-note rhythm – claimed by some to be the composer's musical signature – as it is used in both the composer's
second concerto and
second symphony. Rachmaninoff, under pressure, and hoping to make his work more popular, authorized several cuts in the score, to be made at the performer's discretion. These cuts, particularly in the second and third movements, were commonly taken in performance and recordings during the initial decades following the concerto's publication. More recently, it has become commonplace to perform the concerto without cuts. A typical performance of the complete concerto has a duration of about forty minutes. ==In popular culture==