The second theme in this piece's first movement is oddly in E flat major in the exposition but A flat major in the recapitulation.
The second theme in this piece's first movement is oddly in E flat major in the exposition but A flat major in the recapitulation. Krystian Zimerman performed a landmark recording of this piece with Seiji Ozawa and the Boston Symphony Orchestra. The French horn plays a mournful quarter-note solo near the end of this work's first movement. A solo flute, then a clarinet, introduces the theme of this work's second movement, which is heavy in arpeggiated triplets and is thematically based on a romance written for the Skalon sisters. This work was dedicated to the composer's psychiatrist Nikolai Dahl, who cured him of depression. It begins with a series of chords, alternating with low F half notes, crescendoing all the way from pianissimo to fortissimo, to imitate the sound of tolling bells. For 10 points, name this C minor work for keyboard instrument and orchestra, composed by Sergei Rachmaninoff.
The second theme in this piece's first movement is oddly in E flat major in the exposition but A flat major in the recapitulation.
Sergei Rachmaninoff's  Piano Concerto No. 2 [or Rachmaninoff 2; or Op. 18; prompt on partial answer]