Pharrell Williams chats with ET’s Rachel Smith at the New York City premiere of his biopic, ‘Piece by Piece,’ in theaters on Oct. 11. The musician opens up about why he chose to tell his story through LEGO animation. He also shares whether he’d return to ‘The Voice’ and dishes on the Met Gala’s next theme as he gears up to co-chair for the second time. Plus, Pharrell reacts to Kendrick Lamar headlining Super Bowl LIX and says if there’s a chance he might make a cameo.