◎ DISC 1 Missing ◎ Concept for Bass Soloing Concept for Bass Solo The condition is listed as "Acceptable" due to scratches and some soiling on the cover. As the title indicates, DISC 1 is missing, but this book, supervised by Marc Johnson, sells for 5500 yen new on Amazon. Those who study with this kind of book can probably read music, so I don't think it's a problem without the CD. If you can't read music, you probably won't be able to progress with the exercises in this book. You shouldn't buy it. There are probably no markings inside. In my subjective opinion, the inside is in good condition. Instant purchase OK.