Adam Levine returns tonight for Season 4 of "The Voice." The latest edition will feature Levine and  Blake Shelton, along with two new judges. 

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Usher and Shakira will fill the spinning red chairs that have been vacated by CeeLo Green and Crhsitina Aguilera. Levine says the new line up "snapped into place really quickly."

"The Voice" begins tonight at 8 on NBC.

[Metro Networks]