"Jazz Standard Theory: Everything About Jazz Theory Learned from Famous Songs" Koichi Osamu Price: ¥2400 I bought this to practice jazz piano. It's very easy to understand and helpful. I've read it many times, but I've given up on jazz, so I'll pass it on to someone who needs it. There are some scratches, wear, and folds, but unlike a new book, I think it's easier to use. I'll pass it on to someone who will be playing jazz piano from now on. Please consider it. #KoichiOsamu #Koichi_Osamu #book #art/music_and_dance