Oddly, Mozart wrote out the score of his most famous horn concerto not only in black ink but also in red, green, and blue. Whether he meant thisas a genial prank or had higher aspirations in mind will remain an eter nal mystery. Whatever the case, Henle?s piano reduction takes Mozart at his word and prints the enclosed urtext horn part in exactly the same colors as are found in the autograph score. Perhaps the multi-colored publication will inspire horn players to create new interpretations of this popular concerto.? Piano reduction by Jan Philip Schulze. Cadenzas by Robert D. Levin.