Wolfgang Amadeus Mozart (1756-1791) was an Austrian composer.
He wrote for the clarinettist Anton Stadler, his masonic lodge's brother, works which stay among the most beautiful of the repertoire.
Here are some less known works for clarinets, basset horns or basset clarinets.
Adagio K 484a for 2 clarinets and 3 basset horns (4'09)
Canonic adagio K 484d for 2 clarinets and bass clarinet (1'23)
Emmanuel Boulanger, clarinets