The New York City Ballet began its fall season at the David H. Koch Theater with a three-program tribute to the legendary choreographer/composer duo of Balanchine and Stravinsky. The first installment (which this reviewer unfortunately did not see) featured the classic Greek trilogy of Orpheus, Apollo, and Agon. The second program comprised the most overtly Russian collaborations of the two artists, drawing upon their common background in rich folk and fairy tale traditions.