Katy Perry chats with ET’s Matt Cohen after the live taping of ‘American Idol,’ airing Sundays and Mondays on ABC. The judge reacts to the show’s Top 12 and if she thinks the right contestants made it to the next round. Plus, Katy reacts to attending King Charles’ coronation on May 6, and teases how ‘American Idol’ will handle her being across the globe with a live show taping the next day.