Billie Eilish and Finneas chat with ET's Nischelle Turner at the 66th Annual GRAMMY Awards, airing on CBS and Paramount+. The sibling duo celebrates multiple nominations, including Record of the Year and Song of the Year, for the 'Barbie' soundtrack's 'What Was I Made For?' Billie previews the vibes of her upcoming album, which Finneas says is '99 percent' finished. Plus, Lecrae pops in mid-interview to offer his congratulations.