'X Factor Recap': Michael Buble Challenges Top 8 to 'Prove it Beeyotch'

The musician mentors the contestants on big band night. The X Factor stepped up its game for Wednesday night’s Big Band-themed night, wecloming a 25-piece band and a guest turn by the reigning “king of big band” himself, Michael Buble. Of course, the guy that REALLY brings his A-game for nights like this, Harry Connick, Jr., will be doling out his wisdom on American Idol this January, but Buble was more than ready to mentor the kids in the genre, offering the best line of the season in his...