The Clarinet Quintet in A, K. 581 is Mozart's only completed Clarinet Quintet. It was written in 1789 for the clarinettist of the Viennese Imperial Court Orchestra, Anton Stadler, and is often named after him. Originally written for Basset Clarinet and String quartet, it has been arranged for many different ensembles since. It is one of the composer's most admired works, with its idyllic flowing m…