The series of spring storms caused an estimated $1 billion in damage, with one of the tornadoes carving a 17-mile path of destruction through an Oklahoma City suburb.
Donations are still being tallied, but are in the range of $2 million so far, with all the proceeds going to help the United Way of Central Oklahoma's May Tornado Relief Fund.
The 6-hour event, held at the University of Oklahoma’s Memorial Stadium, marked the largest number of paid attendees for a concert in the stadium’s history, with about 60,000 people in attendance.
Performing were Garth Brooks, Willie Nelson, Trisha Yearwood, Sammy Hagar, Ronnie Dunn, Mel Tillis, John Anderson, Krystal Keith, Kellie Coffey, Wade Hayes and Carrie Underwood (via Satellite from the Grand Ole Opry in Nashville).
Donations are still being accepted online via the United Way home page at unitedwayokc.org.