John Legend Shares What's on Kids Miles and Luna's Christmas List (Exclusive)

John Legend chats with ET's Cassie DiLaura in Los Angeles ahead of 'The Voice' finale, which airs next Monday and Tuesday on NBC. John, who shares four children with wife Chrissy Teigen, reveals what their oldest kids, Luna, 7, and Miles, 5, might have on their Christmas list. He also opens up about how he's feeling ahead of 'The Voice's finale and if feels threatened by Reba McEntire's team.