The product is a collection of 18 Yamaha Disklavier Clavinova PianoSoft player discs by Dunn Brothers Music. These discs are specifically designed for player pianos with 88 keys, making them compatible with a wide range of instruments in the market. Perfect for musicians looking to enhance their playing experience with high-quality, authentic piano sounds, these discs provide a convenient and versatile option for practice, performance, or simply enjoying the beauty of piano music.