Before Ronnie Dunn steps on stage at Toby Keith's Oklahoma Twister Relief Concert this weekend, he wanted to spend some time with Oklahomans who have been impacted by the recent devastating tornado. On the Fourth of July, the star singer spent some time visiting with residents in Shawnee, Okla., even lending a hand wherever possible.

During his time in Shawnee, Dunn visited with residents to lift their spirits, and also volunteered to serve food at a soup kitchen. On Saturday night (July 6), he'll participate in the relief concert to raise money for people who lost everything in the tragic storms that ravaged parts of Oklahoma this past spring.

Keith's relief concert, in which Dunn is participating and helped spearhead, has actually already sold out twice. Before production designers had put every detail of the event in place, they released a number of tickets that fans snagged right away. Earlier this week, a new batch of tickets sold in a matter of minutes.

The sell-out crowd will be treated to live performances by some of country music's biggest stars, including Keith and Dunn, Garth BrooksWillie NelsonTrisha YearwoodSammy Hagar, Mel Tillis and John Anderson, as well as Carrie Underwood, who will perform via satellite from the iconic Grand Ole Opry House in Nashville. Just added to the bill are the ‘Drinks After Work' hitmaker’s daughter Krystal Keith and Kellie Coffey.

In addition to snagging award-winning talent for the lineup, Keith and his team managed to have Ford Trucks, Verizon, Walmart and the Academy of Country Music Lifting Lives come aboard as sponsors.

 Photos of Ronnie Dunn Visiting Tornado Victims in Shawnee, Okla.

Rick Diamond, Getty Images
Rick Diamond, Getty Images
Rick Diamond, Getty Images
Rick Diamond, Getty Images
Rick Diamond, Getty Images