News ‘The Voice’ premiere: John Legend’s campaign-style ad attacking Blake Shelton backfires badly October 20, 2020Cydney Henderson, USA TODAYComments Off on ‘The Voice’ premiere: John Legend’s campaign-style ad attacking Blake Shelton backfires badly "The Voice" is back. Season 19 of the NBC singing competition premiered Monday with returning coach Gwen Stefani. Here's what happened.