Anthony and Demarre McGill are classical music’s Chicago guys. The two brothers grew up within the metropolis’s Chatham neighborhood. Both pursued music and have gone on to main solo and orchestral careers, and now they're coming again to their hometown for his or her first appearances on the Grant Park Music Festival. “Growing up on the South Side of Chicago,” mentioned Anthony, 40, who's ending his fifth season as principal clarinetist of the New York Philharmonic, “I could never have imagined that I’d be flying in from New York to perform in Grant Park. It’s kind of crazy when you think about it.” Crazy or not, Anthony and Demarre, 43, principal flutist of the Seattle