27, K. 595) would later follow, this work is the last of what are considered the twelve great piano concertos written in Vienna between 1784 and 1786.

[5] The concerto is scored for solo piano, flute, two oboes, two bassoons, two horns in C, two trumpets in C, timpani and strings.

Also, Mozart's 25th and Beethoven's 5th concerti have a strong march-like theme in the first movement that is first played in minor and then soon appears gloriously in major.

"[8] According to Simon P. Keefe, K. 503 is now regarded "by common consent one of Mozart's greatest masterpieces in the concerto genre."

It is often viewed as a "kindred spirit" or "the rival and the complement" of Mozart's great C minor piano concerto, K. 491, completed a few months prior.

[2] Keefe mentions and quotes Donald Tovey, Cuthbert Girdlestone, and Alfred Einstein as among the musicologists who uphold K. 503 as exemplary.