Article Photos: Full concert review: Toby Keith, Garth Brooks and more give it up for a great cause at the Oklahoma Twister Relief Concert 2/9

 Sammy Hagar performs during the Oklahoma Twister Relief Concert, benefiting victims of the May tornadoes, at Gaylord Family - Oklahoma Memorial Stadium on the campus of the University of Oklahoma in Norman, Okla., Saturday, July 6, 2013. Photo by Nate Billings, The Oklahoman