To start Tuesday night's episode of NBC's 'The Voice', host Carson Daly introduced a special acoustic performance from Miranda Lambert and host Blake Shelton.

The husband/wife duo performed a song they wrote together and on Miranda took to number one on the Billboard Hot Country Singles Chart, 'Over You'. The song has seen The Voice stage before when eventual Season 3 winner Cassadee Pope brought the crowd to tears with her heartwarming version.

A message on the screen during their performance invited viewers to help tornado victims by donating at redcross.org or calling 1-800 HELP NOW.

Blake also announced after the show that he and NBC have begun to organize a benefit concert for the victims of the Oklahoma tornado.

"We'll know more about it in the next 24 hours," Shelton told Billboard "I'm hoping it will raise a lot of money. Obviously it will be televised and will happen really quickly."

While pointing to his fellow coach Usher, Blake added, "I can call in some really big favors."

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