On the Town is a musical with music by Leonard Bernstein and book and lyrics by Betty Comden and Adolph Green, based on Jerome Robbins' idea for his 1944 ballet Fancy Free, which he had set to Bernstein's music. From Wikipedia
The event, featuring the Oscar-nominated film's star and director, will also mark the New York Philharmonic debut of Metropolitan Opera music director Yannick Nézet-Séguin.