The author created physical album cards with NFC tags to teach their 10-year-old son about music discovery, inspired by their own experience of collecting CDs as a child. The cards are designed to be collected and traded, and each one can be tapped to play the corresponding album on the home speaker system. The author used a combination of technology, including AI diffusion models and NFC tags, to create the cards. The project aims to encourage active listening and ownership of music, rather than passive consumption.