Reba McEntire and Blake Shelton's relief concert sells out

(CBS) An extra show has been added to Reba McEntire and Blake Shelton's "Tornado Relief Concert" after the original performance sold out within two hours.

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The original concert date is May 26, but after tickets sold out so quickly, coordinators added an extra performance on May 25.

The concert, set to be held in Oklahoma, is aimed at helping out the country stars' hometown friends in Atoka county, Okla., who are victims of the recent weather disasters that have swept through the U.S..

McEntire was born in Kiowa, Okla., which is about 30 miles from where the most devastation took place. Shelton, also from Oklahoma, grew up in Ada, and currently lives in Tishomingo, which is less than 50 miles from the Atoka county border.

"A lot of people lost a great deal in this disaster and it's particularly close to us because we both consider Oklahoma home," McEntire said. "We wanted to do something and let the people in Oklahoma know that we love them and we're praying for them during this difficult tragedy."

"Oklahoma defines who I am and seeing the effects this disaster has had on my neighbors, I knew I had to do something," Shelton said. "Reba and I have a lot of love for this state and we wanted to do what we can to help. This place is my home and these people are family to us."

All proceeds from the concert will go to Atoka county's Tushka Disaster Relief Fund.