Purchased when advancing to the second year of the Yamaha Music School's Infant Course. Although we stopped attending Yamaha, the DVDs were elaborately made and my child enjoyed watching them, so we kept them with care. However, we've decided to let them go as my child has grown. These are Yamaha-exclusive teaching materials, so I believe they are difficult for those outside of Yamaha to purchase. DVD operation has been confirmed on home equipment. For children taking Yamaha lessons, as well as those who aren't, these DVDs are designed to be fun and educational, covering everything from famous children's songs to classical music. How about using them for educational purposes or as background listening? Regular price: 1980 yen x 2 discs