Rhapsody on a Theme of Paganini Opus 43 (18), by Sergei Rachmaninov

From Wikipedia:

The Rhapsody on a Theme of Paganini, Op. 43, (Russian: Rapsodiya na temu Paganini) is a concertante work written by Sergei Rachmaninoff. It is written for solo piano and symphony orchestra, closely resembling a piano concerto. The work was written at Villa Senar, according to the score, from July 3 to August 18, 1934. Rachmaninoff himself, a noted interpreter of his own works, played the solo piano part at the piece's premiere at the Lyric Opera House in Baltimore, Maryland, on November 7, 1934 with the Philadelphia Orchestra, conducted by Leopold Stokowski. Rachmaninoff, Stokowski, and the Philadelphia Orchestra made the first recording, on December 24, 1934, at RCA Victor's Trinity Church Studio in Camden, New Jersey.