TAMPA – Music Legends Chicago and Earth, Wind and Fire will perform on Friday, Aug. 16, 7:30 p.m., at the MidFlorida Credit Union Amphitheatre at the Florida State Fairgrounds, 4802 U.S. 301 N., Tampa. Call 813-740-2446 or visit www.livenation.com. Billboard hails that Chicago is one of “the most successful…