People still love Elvis. People will always love Elvis. Modern stars like Martina McBride, Carrie Underwood and Amy Grant love the great man so much they've pumped his voice in from beyond the grave, pulling off some digital trickery and get to duet with their hero on a set of Christmas classics. Like the Dean Martin duets set from 2007, this one actually works better than it has any right to. While disgruntled old-timers may wonder why you don't just listen to the unfettered Elvis holiday originals, this will do in a pinch.