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Blake Shelton expects to have more details today about the benefit concert he's organizing with NBC to raise money for victims of the Oklahoma tornado.  The country star tells the special show "will be televised and will happen really quickly." 

He adds that he's "hoping it will raise a lot of money."  While Blake didn't mention any names that might be attached to the event, "Billboard" says the singer pointed to fellow "Voice" coach Usher as he said he can "call in some really big favors." 

Shelton is an Oklahoma native, and still makes his home in the state.  He was born in Ada, which is approximately 75 miles away from the town of Moore, which was devastated by a massive and deadly tornado on Monday.  Shelton now makes his home with wife Miranda Lambert in Tishomingo, which is just over 100 miles south-southeast of Moore. 

Blake and Miranda launched last night's edition of "The Voice" with a special performance of Miranda's hit "Over You" in tribute to the storm victims. "Over You," about the difficulties of dealing with loss, is from Lambert's album "Four The Record."  She and Blake originally wrote the song about Blake's brother, who was killed in a car crash when Shelton was 14 years old. 

Lambert and Shelton have received a number of honors for the chart-topping track, which was named Song of the Year at the most recent CMA and ACM award ceremonies. 

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