Hill and McGraw will perform July 5 at the New Orleans Arena as part of their "South2Soul II" tour. Hill is a native of Star, Miss.; McGraw grew up in Start, La.
"We will not stop, we will not forget, we will not quit, until we see our friends, our families and our neighbors returned to the lives that they once knew," the country singers said Thursday in a statement. "We hope to give everyone who comes out a few hours to just enjoy."
Proceeds will go to their new Neighbor's Keeper Foundation and other organizations assisting individuals in Mississippi and Louisiana who are suffering from the effects of Hurricane Katrina.
Half of the floor seats will be given to Katrina volunteer workers, according to the statement.