why did adam levine cancel his tour

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1. Adam Levine Quits ‘The Voice’: Did He Leave Because of Backlash? (Exclusive)

   

2. Adam Levine Quits ‘The Voice’: Did He Leave Because of Backlash? (Exclusive)

   

3. Adam Levine cancels Maroon 5 concert due to throat problem

   

4. Adam Levine Is Returning to 'The Voice' to Give Blake Shelton a Hard Time

   

5. DiscoverNet

   

6. Why Is Adam Levine Leaving The Voice?