Tickets for Toby Keith's upcoming Oklahoma Twister Relief Concert sold out in less than three hours on Friday (21Jun13). The 6 July (13) gig at the Oklahoma Memorial Stadium in Norman will feature performances by Keith, Garth Brooks, Willie Nelson, Trisha Yearwood, Ronnie Dunn and Sammy Hagar. After learning all 80,000 tickets had been sold, Keith went online and posted: "As of this time, there are no #TKOKrelief tickets avail (available). Once we finalize production, it is possible that there will be addt'l (additional) tix (tickets) released!" Blake Shelton's televised Healing in the Heartland concert in Oklahoma City in May (13) helped raise more than $6 million (£3.9 million) for the recovery effort in Moore, Oklahoma, which was left ravaged by a deadly twister. Kings of Leon and The Flaming Lips will co-headline another show benefiting victims of the storms on 28 July (13).