Watch Mariah Carey, Adele, Lady Gaga Sing 'All I Want for Christmas'
James Corden recapped a year's worth of "Carpool Karaoke" passengers with an all-star rendition of Mariah Carey's "All I Want for...
Lady Gaga Releases Emotional 'Million Reasons' Video: Watch
Following her recent performance of "Million Reasons" at the Victoria's Secret Fashion Show, Lady Gaga released her video for the Joanne...