Reba McEntire and Blake Shelton raised $500,000 for victims of recent tornados in Atoka County, Okla., during sold-out disaster relief concerts Wednesday and Thursday (May 25-26) at the Choctaw Events Center in Durant, Okla. Susie McEntire-Eaton and Kelly Clarkson made surprise guest appearances at Thursday night's show. McEntire and Shelton co-headlined the event and opened the show with a duet of "Oklahoma Swing." McEntire was born near Kiowa, a community located some 30 miles from the greatest devastation. Shelton was born in Ada and currently resides in Tishomingo, less than 50 miles from the Atoka County line. All proceeds from both shows, as well as donations from the Choctaw Nation and fans, will go toward Atoka County's ongoing relief efforts through the Tushka Disaster Relief Fund. Additionally, a special mobile fundraising campaign is underway through the mGive Foundation. Fans can text OKGIVE to 27722 to make a one-time donation of $10 to be billed to their monthly cell phone bill.