(Pia Duet Play-Along). This great series comes with a CD that features separate tracks for the Primo and Secondo parts perfect for practice and performance! 9 holiday favorites, including: Angels We Have Heard on High * Ding Dong! Merrily on High! * The First Noel * God Rest Ye Merry, Gentlemen * Hark! the Herald Angels Sing * It Came upon the Midnight Clear * O Come, All Ye Faithful (Adeste Fideles) * O Little Town of Bethlehem * What Child Is This?