Bassoon Concerto in B-flat major, K. 191

Mozart dated the autograph 4 June 1774 in Salzburg, months before his eighteenth birthday; it is the earliest of his surviving wind concertos and has remained the central concerto of the bassoon repertoire. Older accounts connect it with the Munich amateur Thaddäus von Dürnitz, who is said to have ordered bassoon works from Mozart, but no document links him to this score. The writing treats the instrument's range as character rather than display, and the theme of the slow movement anticipates the Countess's Porgi amor, written twelve years later for Le nozze di Figaro.