Due to the snow, shipping may be delayed by several days. If you are in a hurry, please purchase elsewhere. A book set for learning DTM arrangement techniques, chord progressions, and music theory. I am also selling many other books that I accumulated when I was into DTM, so please take a look. ① 108 Cool Chord Progressions ・ Modulation! Tension! Two-Five! ② Chord Progression Idea Book for Immediate Singing: 50,000 Songs You Can Create on the Keyboard ③ Chord Arranging Method - Fujimaki Method - ④ Useful! Chord Theory: A Lesson for Creators That Doesn't Require Rote Memorization ⑤ Listening-Only Music Theory Introduction: Fujimaki Method (There are notes written in it. See photo 7) Thank you for viewing.