Something not quite as old - Gershwin’s “Concerto for Piano and Orchestra in F major”, a very 20th century America sounding piece of music.

The wikipedia writers note:

The work was premiered by the New York Symphony Orchestra with Damrosch conducting (three years later the orchestra would merge with the Philharmonic Symphony Society into the New York Philharmonic Orchestra) at Carnegie Hall in New York on December 3, 1925, and featured the composer as the soloist. The concert was sold out and the concerto was very well received by the general public. However, the reviews were mixed, with many critics unable to classify it as jazz or classical. Indeed, there was a great variety of opinion among Gershwin’s contemporaries; Igor Stravinsky thought the work was one of genius, whereas Sergei Prokofiev disliked it intensely.

Performed by Andre Previn:

MP3 Audio