With the extension of artistic expression into the realm of sound and the creation of records and their sleeves, innovative works of great esthetic quality began to appear. Creative talents from a variety of artistic affiliations designed sleeves for their sound works, and in their hands the standard of 30 X 30 cm album cover came to be an especially attractive object. This detailed catalogue includes not only vinyls and CDs but also books, posters and other objects related to music and sound works.