Toby Keith's previously announced concert to benefit the victims of the devastating Oklahoma tornado is looking like it will be a whirlwind of success. Not only does it have a slew of top-notch performers, it also sold out at an astonishing rate. 

Tickets went on sale Friday (June 21), and due to overwhelming demand, sold out in a little over an hour, showing that country music fans love to step out and help out when needed. Plus, a lineup of amazing country stars is definitely a big draw. Willie NelsonGarth Brooks and his wife Trisha YearwoodRonnie DunnSammy Hagar, Mel Tillis and John Anderson will join the 'Drinks After Work' singer for a night of fun and philanthropy.

Even more artists are being added to the lineup and will be announced on a future date. Fans who were hoping to snatch up a ticket or two might have a chance -- event organizers may have additional tickets that could be released for purchase once production is finalized.

The net proceeds of tickets (after tax and credit card fees) will benefit the United Way of Central Oklahoma May Tornadoes Relief Fund to aid recovery efforts. These efforts are deeply personal to Keith, as he grew up in Moore, Okla. -- where the devastating tornado hit hardest -- and lives in Norman. He was in Nashville when the twister struck, but immediately returned to his hometown upon hearing the reports. Amidst devastation and a long rebuilding process ahead, one thing's for sure: the Oklahoma Memorial Stadium will be rocking on Saturday, July 6.