World of Harmony Music; Child's Play ~ A Beginner's Collection of 28 Favorite Childhood Songs for Zither, Lap Harp This is the easiest of the seven World of Harmony Music books, and is the best for beginners and young children. Contains 28 favorite children's songs, arranged and sized for "Melody Harp", "Small World Toys", "Music Maker", and T.K. O'Briens zithers. (NOT FIRST ACT) If the music cards for your zither measure 4" across the top, 12" across the bottom, and 8" vertically, these books should work for your zither. Just play the notes in the order shown on the music sheets, instant success. Tuning guide and rhythm lessons included. Now available, look for my separate companion book of harmony parts for each song in this book, so duets can be played on a second zither.