Performed by Keith Dwyer, clarinet Accompaniment: Cassini String Quartet: Charles Roth, 1st violin: Marla Smith, 2nd violin: John Madison, viola: John Iatzko, violoncello Written for his friend and fellow Mason in Vienna, AntonStadler, the quintet was completed in September of 1789, and premiered a few days before Christmas of that year.

It is one of Mozart's most perfect accomplishments - a score of proud serenity, transparent texture and radiantbeauty. It is also an example of Mozart's unc...