Unforgettable...that's what he is. This year marks what would have been the 100th birthday of one of America's finest performers of popular song: Nat "King" Cole. In his decades-long career, Cole blazed the trail for many entertainers to come, influencing the likes of Count Basie and Ray Charles along the way. Universal Music Group will celebrate his milestone centennial with a pair of retrospectives this spring, plus a digital expansion of another vocal icon paying tribute to the