In this book, Xavier Carbonell and Joaquín Gáñez bring together more than seven hundred covers created by all kinds of people for their homemade CD and cassette copies. No time, geographical, or musical genre limitations were set in the search and selection of material, with the main focus being on the graphic interest and diversity of the contributions. The material has been organized according to graphic styles and techniques, attitudes, and moods, in chapters named after well-known songs. Thus, Alphabet Street groups together those that focus on typography; Heroes, those that evoke the image of their musical idols; Qué será, será, the abstract ones; I'll be your mirror, those that recreate the original cover, etc.