Oklahoma Tornado Benefit Concert: Usher, Darius Rucker Join Blake Shelton’s May 29 Oklahoma Tornado Relief Concert, “The Voice” Coaches Team Up

Usher and Hootie and the Blowfish front man Darius Rucker have joined Blake Shelton's Oklahoma Tornado relief concert, according to The Hollywood Reporter.

Shelton, an Oklahoma native, organized the concert entitled Healing in the Heartland: Relief Benefit Concert. He will also headline the show on Wednesday, May 29. The proceeds from the show will benefit the United Way of Central Oklahoma May Tornadoes Relief Fund.

Usher and Rucker join a lineup that already consists of Shelton's wife Miranda Lambert, Luke Bryan, Rascal Flatts, Ryan Tedder (the front man of the band OneRepublic), Reba McEntire and Vince Gill.

Shelton and Usher work together as coaches on the NBC reality singing competition "The Voice." The network will broadcast the concert live at 9 p.m. EDT. Several cable networks, including Style, G4, Bravo, E! and CMT, will air the concert live or on delay.

The concert will occur at the Chesapeake Energy Arena (home of the NBA's Oklahoma City Thunder) in Oklahoma City. Tickets for the concert went on sale Saturday morning and sold out in less than five minutes, according to NBC.

Shelton and Lambert paid tribute to the fallen with a somber rendition of their song "Over You" during last Tuesday's results broadcast of "The Voice."

United Way of Central Oklahoma will use the funds raised as necessary to aid the rebuilding and recovery efforts in Oklahoma after tornadoes devastated the town of Moore last week.

The final death toll from the tornadoes was 24, including 10 children. The natural disaster, which peaked at 1.3 miles wide, also injured 377 people.