Classic practice pieces, a standard教材 loved by piano learners for a long time, is a 4-CD set. ・Burgmüller: 18 Studies / 12 Studies ・Czerny: 50 Selected Studies (Nos. 1-25) ・Sonatina Album I (Nos. 9-11) ・Sonatina Album I (Nos. 12-15) All are educational series with commentaries, and the content is ideal for acquiring basic skills and expressive power. It can be recommended as a reference performance for home practice, as well as a teaching material for instructors. 【Condition】 ・Playback confirmed ・Case has scratches, minor damage, and signs of aging ・Discs show no significant damage (visual inspection) ※Please refrain from purchasing if you are concerned about minor details due to the used condition. This is a standard教材 set that can be used for a long time, from those who have just started learning piano to those who are advancing to the intermediate level. Perfect for those looking to purchase a set.