It's official -- Toby Keith has announced the tornado-relief show he's been putting together with Ronnie Dunn.

The concert will indeed take place over the Fourth of July weekend -- July 6th at Oklahoma University's Gaylord Family - Oklahoma Memorial Stadium in Norman. Also on board so far are Willie Nelson, Garth Brooks and Trisha Yearwood. Proceeds will go to The United Way of Central Oklahoma May Tornadoes Relief Fund.

Tickets, which will go for $25 regardless of the seat, go on sale on June 21st at 10:00 a.m.