CONTRIBUTED PHOTOEarth, Wind and Fire, 8:30 p.m. Aug. 1, Wind Creek Steel Stage, Musikfest. With a sound that blends funk, jazz, pop, soul and R&B, Earth, Wind & Fire is noted for its hits, “Let's Groove,” “September” and “Reasons.” Earth, Wind & Fire has had eight No. 1 hits and has sold more than 100 million albums worldwide in its five-decade history. The group has released 23 albums, eight of