Be sure to add me to your favorites list Original Casio Song Book for the CTK-720 Electronic Keyboard, with a 50 Song Bank and a 50 Piano Bank This is an original Casio multi-language book of song music, for use with the CTK720 model keyboard. There are 50 songs of various kinds in the Song Bank list, and 50 songs in the Piano Bank, on 100 pages. This book is in very good condition, with some minor creases but no tears or writing in it, and it's complete. The pages themselves are close to like new. The music is level mostly A, B, and C level in difficulty, with some D, and a handful of E difficulty level songs included. I have a couple of these available at this time, both in similar condition. This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thank you so much for looking! Please check out my Store!