6(Vocal Collection). This collection includes 15 intermediate-level popular Christmas songs arranged for any combination of two voices and piano. Songs include: Believe * The Christmas Song * Christmas Time Is Here * Feliz Navidad * Have Yourself a Merry Little Christmas * A Holly Jolly Christmas * Mary, Did You Know? * Merry Christmas, Darlng * The Most Wonderful Time of the Year * O Holy Night * Silver Bells * Sleigh Ride * Walking in the Air * White Christmas * Winter Wonderland.