This new release is the Christmas equivalent of The King’s Singers’ recent release, Great American Songbook. Paying homage to the a capella group’s heritage while still acknowledging their modern passion for swing, the group mixes Christmas classics like “In the Bleak Midwinter,” and “The Holly and the Ivy,” with modern tunes such as “Winter Wonderland,” “Frosty the Snowman,” and “Sleigh Ride.” (Signum)