Yefim Bronfman has the detail on Mozart’s Piano Concerto No. 22 which he plays with the Pittsburgh Symphony October 28, 29 and 30 at Heinz Hall. In the upstairs rehearsal room he tells Jim Cunningham how he made up his mind on selecting the new Steinway which debuts this weekend with Manfred Honeck; New York after the pandemic; Halloween decorations; and his premiere in Cleveland.  Plus, a look ahead at the rest of his winter season in this "At the Symphony" conversation.