Sammy is excited to announce that he'll be joining Toby Keith at Keith's Oklahoma Twister Relief Concert. Joining them also will be Garth Brooks, Willie Nelson, Trisha Yearwood, Ronnie Dunn, Mel Tillis and John Anderson.

This event is taking place July 6 in Norman, Oklahoma in the Gaylord Family Oklahoma Memorial Stadium at the University of Oklahoma.

"When Toby asked me to come on board, I immediately said yes!" Hagar said in a release. "He's put together a hell of a concert lineup to help raise funds for the brave and resilient people of Oklahoma. My job is going to be to help them take their minds off their problems and have some much-needed, good old-fashioned fun."

Proceeds from the twister relief benefit will go to the United Way of Central Oklahoma May Tornadoes Relief Fund to aid recovery efforts. All tickets are $25 and go on sale June 21. Seats are reserved and buyers are limited to an eight- ticket limit.

To further support the May storm recovery efforts, United Way donations are also being accepted online via the United Way home page at www.unitedwayokc.org. To give by credit card, call 405-523-3598, 405-523-3597 or the United Way of Central Oklahoma’s main number at 405-236-8441. Checks may be mailed to the United Way of Central Oklahoma, P.O. Box 837, Oklahoma City, OK 73101 with notation for May Tornadoes Relief.

For ticket details go to: http://www.redrocker.com/events/2013-07-06/toby-keiths-oklahoma-twister-relief-concert-gaylord-family-oklahoma-memorial-stadi