42. "Saturday In the Park," Chicago
The brass-powered soft-rockers pretty much perfect Seventies mellowness on this radio staple, a shout out to Central Park written while the band was recording in New York. Singer Robert Lamm can't remember exactly when he visited the park ("I think it was the Fourth of July") but he had such a chill time he can't wait to get back ("I've been waiting such a long time/For today"). Check out the open-air tropical air aviary at the zoo, man. It's awesome!