On September 25 and 26 in the Lensic, Santa Fe Pro Musica opens its 40th anniversary season with conductor Benjamin Hochman leading the Pro Musica Orchestra in live performances of Mozart’s mischievous Overture to Così fan tutte and Beethoven’s monumental Fifth Symphony. Hochman will join pianist Anne-Marie McDermott in Mozart’s dueling Concerto for Two Pianos, K. 365.