The Voice Christina Aguilera and Ariana Grande perform duet in 'The Voice' finale 05/25/2016 Christina Aguilera and Ariana Grande performed a show-stopping duet on Tuesday's finale of "The Voice." Read More RELATED NEWS Gwen Stefani joins CNN's New Year's Eve broadcastChristina Aguilera denies she quit 'The Voice' due to Gwen StefaniChristina Aguilera slams 'The Voice' -- "It's not about music" TAGS: The Voice Christina Aguilera Ariana Grande Whitney Houston
