Wolfgang Amadeus Mozart's Flute Quartet No. 3 in C major, K. 285b, is the last of three quartets for the amateur flautist Ferdinand De Jean. Mozart's manuscript designates this work for flute, violin, viola and cello. Despite following directly after the first two flute quartets in the Köchel catalogue, the Quartet in C was almost certainly written a few years later, likely sometime between the years 1781 to 1782. The quartet is in two movements: 1. * Allegro, 3/4 2. * Andantino, Theme and variations A typical performance lasts roughly 15½ minutes.