The document discusses the purposes and techniques used in CD covers. It analyzes covers for Marilyn Manson, Taylor Swift, Beyonce, and Eminem to demonstrate how covers communicate: 1) the artist's star image through visual codes like color, lighting, composition; 2) the musical genre through conventions of visuals and technical elements; and 3) a unique selling point through distinctive visual features. Analysis of individual covers shows how elements construct meanings that position the artist and genre.