Be sure to add me to your favorites list Original Casio Song Music Book for the CTK-411 and CTK-431 Keyboards, 85 Songs in a 76 Page Booklet. This is an original Casio booklet of song music, for use with the CTK411 and CTK431 models of Casio digital keyboards. There are 76 pages, and the booklet contains scores for 85 pieces of music for use with this model. This booklet is in overall good condition, and complete. I say this because though there are some creases inside, all of the scribbles that you can see in the photos are on the covers only. Nothing covers the music inside. The music is graded by difficulty as A, B, C, and D. Most are A and B level, but with some C and D level songs as well. Thanks for looking! Check out my Store!