This is a piano repertoire collection, Concerto Series II, published by Gakken. Includes 23 CDs + 11 music books + 1 guidebook. This is a full, unopened, and unused set of Series 2. The outer box has some minor damage, such as scratches, small marks, and creases, from storage, but the contents are unopened and in excellent condition. It's useful for piano practice and finding pieces for recitals. It includes a wide range of songs, from My Neighbor Totoro to Chopin. The box has some damage due to aging. Please understand the condition and content before purchasing. Please refrain from purchasing if you are sensitive to minor details.