Now a hard-to-find book, "Yamato Seigaku Kyotei" by Yoshio Hasegawa, published by Ongaku no Tomo Sha. This is a practical guide to harmony based on functional theory. The slipcase shows signs of aging, such as discoloration and soiling, but the book itself is in very good condition, with no writing, stains, yellowing, or tears. No claims or returns accepted. Please refrain from requesting arbitrary price reductions. If you have any such requests, please let me know in the comments section.