Ariana Grande Hilariously Interrupts John Legend's Pitch To 'The Voice' Artist With 'Thank U, Next'

Ariana Grande is saying "Thank U, Next" to her fellow coaches on "The Voice." The "POV" songstress is joining the hit reality show's upcoming 21st season, and it's clear she isn't afraid to fight a little dirty to win! In a new sneak peek at the auditions, Ariana hilariously interrupts John Legend as he tries to convince a contestant to join his team, pushing a button that made her hit song "Thank U, Next" blast through the speakers! Season 21 of "The Voice" premieres Sept. 20 on NBC.