Al Roker Raves Over Son's Victory At The Special Olympics: 'So Proud Of My Boy'
John Legend dishes to Access' Scott Evans about joining Season 16 as coach and reveals that Khalid will join Team Legend as an advisor! Hear why the EGOT winner sought out Khalid. And, is John nervous to face off with two-time "Voice" champ Kelly Clarkson? "The Voice" premieres Feb. 25 on NBC.