Wednesday's show is being organized and will be headlined by country music star Blake Shelton. The concert is to raise funds for the United Way of Central Oklahoma May Tornadoes Relief Fund.
Tickets for the concert went on sale Saturday morning and sold out in under 5 minutes, said NBC, which is airing the concert. The program will also air on cable networks Style, G4, Bravo, E! and CMT on either a live or delayed basis.
Notable deaths of 2014 [PHOTOS]
'7th Heaven' cast reunites for family dinner