"This thoughtful, elegantly written little book pays homage to that least loved of music formats, the compact disc. Filled with engaging anecdotes and philosophical observations, the book offers a concise cultural history of audio recording, describing the vicissitudes of the music industry and the dissolution of sonic objects into codes and clouds." -- Christoph Cox, Professor of Philosophy, Hampshire College, USA, and author of Sonic Flux: Sound, Art, and Metaphysics (2018) "Robert Barry rekindles our wonder for the technology that 'put a laser in your living room.' Futuristic and confounding, the CD converted light into sound, philosophers into audio critics, and audio critics into philosophers. But this book is more than the story of a format whose perfection laid the groundwork for its own demise--it's also an intercultural history of light, the quest for technological perfection, and the art of critiquing that quest through glitches, skips, and stutters." -- Mack Hagood, Robert H. and Nancy J. Blayney Associate Professor of Comparative Media Studies, Miami University of Ohio, USA, and author of Hush: Media and Sonic Self-Control (2019).