returned on Sunday with the show's Top 4, who sang their hearts out in an effort to make it to this season's finals. The episode was supposed to feature the Top 5, but Caleb Kennedy was forced to exit the show last week when a controversial video resurfaced.ET's Lauren Zima spoke with judges Katy Perry, Lionel Richie and Luke Bryan about Sunday's big episode, and Kennedy's shocking departure.«Well losing great talent is always [hard]... this is our class. This is the class of 2021.