Even swingers get in the holiday mood. On this terrific collection, the men who made Vegas groove dip into Christmas fare and come out smelling like desert roses. Whether it’s Dino giving a twinkle to such wintry classics as “Baby It’s Cold Outside,” “Winter Wonderland,” and “I’ve Got My Love to Keep Me Warm,” Sammy bringing his trademark zest to “The Christmas Song” and “Jingle Bells,” or the Chairman of the Board making magic with “Have Yourself a Merry Little Christmas,” “The First Noel,” and “I’ll Be Home for Christmas,” these three masters of song sound as if they’re having a joyful time of it all. Just don’t look for irony here. Whether it’s songs of cheer or songs of faith, they all sing straight from the heart. And that sincerity is precisely what makes this collection the year-round joy it is.