【General Supervisor】 Shimpei Shiotani (Wind Orchestra Instructor) 【Instructors】 [Flute] Hiroaki Kanda (NHK Symphony Orchestra) [B♭ Clarinet] Tadayoshi Takeda (Professor, Kunitachi College of Music) [B♭ Clarinet] Ayako Oura (Tokyo Kosei Wind Orchestra) [Alto Clarinet] Kiyoshi Arai (Tokyo Kosei Wind Orchestra) [Bass Clarinet] Makima Kimura (Tokyo Kosei Wind Orchestra) [Contra/Alto Contra/Bass Clarinet] Nobuo Fukushima (Tokyo Kosei Wind Orchestra) [Oboe/English Horn] Naoki Sugiura (Tokyo Symphony Orchestra) [Bassoon] Koji Okazaki (NHK Symphony Orchestra) [Soprano/Alto Saxophone] Nobuya Sugawa (Tokyo Kosei Wind Orchestra) [Tenor Saxophone] Yasushi Arai (Siena Wind Orchestra) [Baritone Saxophone] Yoshiyuki Hattori (Quatre Roseaux Saxophone Ensemble) [Trumpet/Cornet/Flugelhorn] Atsuhiko Okamoto (Osaka Harmony Brass) [Trombone/Bass Trombone] Noboru Ogino (Tokyo Symphony Orchestra) [Horn] Atsuko Sone (Tokyo Symphony Orchestra) [Euphonium] Tamao Araki (Vivid Brass Tokyo) [Tuba] Hideo Sano (Shobi University) [Snare Drum/Timpani/Bass Drum/Cymbals/Drums] Kazuki Momose (Former: NHK Symphony Orchestra) [Contrabass] Takayuki Kageyama (Arte Chamber Orchestra) [Harp] Kaya Watanabe 【Recommendations】 All Japan Band Association, Japan Band Directors Association, Japan Society for Wind and Percussion Instruments The demonstrations are very detailed, explaining embouchure and how to hold the sticks, making it very helpful not only for students but also for instructors. The main body is in excellent condition, having been played only once to import the data onto a computer. Regarding the case, about three volumes have yellowed due to sun exposure. Please check the photos. It was purchased for about 250,000 yen. It is currently sold for about 100,000 yen on a certain online shopping site. Each disc has chapters to quickly reach the desired content, such as posture, how to hold the instrument, arm position, embouchure, basic exercises, and step-up exercises, so I think it is very convenient for learning an instrument. Here is the URL of the website that introduces the product: https://www.universe-1.jp/products/mz_109.html