Adam Levine Teases How Much Longer He'll Do 'The Voice' (Exclusive)

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For the past 14 seasons, Maroon 5's frontman has been having a ball on the NBC singing competition show. But when Levine sat down with ET to discuss his new role as ambassador for Y cologne by Yves Saint Laurent, he admitted that getting him to sign on took some serious convincing by executive producer Marc Burnett.