Oklahoma native says concert will "happen very quickly"

Blake Shelton and NBC have begun to organize a benefit concert for the victims of the Oklahoma tornado that have left thousands homeless, killed at least 24 people and decimated the city of Moore.

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

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While pointing to his fellow coach on "The Voice" Usher, Shelton noted, "I can call in some really big favors."

Shelton is a native of Ada, Okla., about 75 miles south of where the tornado struck on May 20.

Shelton and his wife Miranda Lambert opened Tuesday's "Voice" with "Over You," a ballad the duo had written about his older brother being killed in a car accident. Unlike most "Voice" shows that encourage wall-to-wall applause, the Tuesday edition opened in silence.

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"I think it was the perfect song for this situation," Shelton said. "The moment was right and I wish things would've been different and I wouldn't have been thinking about performing a song like that."

Shelton will perform on the show again next week with his new Warner Nashville label mate Sheryl Crow. Her debut for the label is slated for release in September.