The disc has no noticeable scratches and played without any problems. Set of 16 CDs! Includes booklet! This is a complete collection of works by Masao Koga, a composer who symbolized Showa-era popular songs, gathered from Victor, Columbia, and Teichiku, where he was active. His pre-war songs had a truly modern sound, using guitars, mandolins, and other instruments to create a fresh and pleasant urban sound for kayokyoku (popular songs) at the time. After the 1950s, he was left behind by the changing times, and he established the enka genre, taking the position of a composer of nostalgic kayokyoku. As a result, even his modern pre-war songs, which were intended to be for modern boys, were interpreted in the enka style, and even his image... I really felt that!