(Piano Play-Along). This amazing pack lets you play along with original backing tracks created and recorded by the Piano Guys! Each book includes a unique code that lets you access the backing tracks online for download or streaming. This book features 8 songs from the 2017 holiday album, arranged for piano solo. Includes: O Holy Night/Ave Maria * Ode to Joy to the World * What Child Is This? * Gloria!/Hark! The Herald Angels Sing * O Little One Sweet * Silent Night * The Manger * The Sweetest Gift. Don't miss this opportunity to play along with the Piano Guys!