Music making is usually considered as mostly a solitary activity done by composers, but with the current Web 2.0 technology it is possible to provide new possibilities for social music making. CODES is a Web-based networked music environment designed to support music creation by novices in a cooperative and prototypical way, since no previous musical knowledge is required. Differently from others social media, where people only publish their content created elsewhere, in CODES novices can draft and refine cooperatively simple musical pieces, actually creating their own music, instead of only consuming it. This paper presents the main characteristics of CODES for social music making, with special focus on novices in music. Categories and Subject Descriptors H.5.3 [Information Interfaces and Presentation]: Group and Organization Interfaces General Terms Human Factors Keywords Web, Cooperative Musical Prototyping, Ordinary Users.