Object Lessons is a series of short, beautifully designed books about the hidden lives of ordinary things. The story of the compact disc is also the story of the end of physical media. It is the story of how the quest for perfection laid the grounds for the death of a great industry. For in the passage from analogue media, like records and tapes, to digital media, like CDs, something changed in the nature of media and in the relationship we have with music. Music became code, a sequence of 1s and 0s. A flow of pure information. The material structure of the medium itself was