(Instrumental Play-Along). 15 favorites from the holidays with recorded accompaniments, including: Deck the Hall * The First Noel * Good King Wenceslas * Hark! the Herald Angels Sing * It Came upon the Midnight Clear * O Christmas Tree * We Three Kings of Orient Are * and more. Audio is accessed online using the unique code inside the book and can be streamed or downloaded. The audio files include PLAYBACK+, a multi-functional audio player that allows you to slow down audio without changing pitch, set loop points, change keys, and pan left or right.