Luke Bryan, Rascal Flatts and One Republic's Ryan Tedder have been added to the lineup of Blake Shelton's "Healing in the Heartland: Relief Benefit Concert," NBC announced on Saturday.
The performers join the concert, which sold out in five minutes on Saturday morning, headlined by "The Voice" coach and Oklahoma native, his country singer wife Miranda Lambert, Reba McEntire and Vince Gill.
As TheWrap previously reported, the concert benefiting the residents of the Tornado-ravaged region will air live on NBC next Wednesday at 9 p.m. ET/PT. Additionally, sister NBCUniversal networks Style, G4, Bravo, E! and CMT will either air the show live or on a delayed basis.
The event will raise funds for the United Way of Central Oklahoma May Tornadoes Relief Fund.
R.A. Clark (Academy of Country Music Awards, MDA Show of Strength Telethon) will executive produce the broadcast with supervising producer Rob Paine, director Gregg Gelfand and writer Gene Pack.
The tornado, which hit Oklahoma City and surrounding areas on Monday, killed at least 24 people, including nine children, and left more than 370 people injured.