Toby Keith led a roster of country stars (and one curly-haired rocker) in the heat-baked Oklahoma Twister Relief concert on Saturday. The benefit began with Toby's daughter Krystal singing the National Anthem, and ended eight hours later with Toby's somber "American Soldier." In between, Garth Brooks, Carrie Underwood Ronnie Dunn, Willie Nelson, Sammy Hagar and others entertained the 65,000 crowd. "Let’s have some fun and raise some hell," Garth said. “Today the healing begins.” Proceeds from the show will benefit the United Way of Central Oklahoma.