Oklahoma native Carrie Underwood has signed on for Toby Keith's upcoming tornado relief concert on 6 July (13).

All 80,000 tickets for the benefit in Norman, Oklahoma sold out in less than three hours on Friday (21Jun13), and now those lucky enough to grab a seat will be treated to a set from the former American Idol star, who dedicated her song See You Again to the victims of the May (13) storms in her home state at the 2013 CMT Music Awards on 5 June (13).

Her performance will be aired via satellite from the Grand Ole Opry House in Nashville, Tennessee during the show, which will also feature Keith, Willie Nelson, Garth Brooks and Ronnie Dunn.

Proceeds will benefit the United Way of Central Oklahoma's tornado relief fund.