ABSTRACT. Mazumder notes that copyright law is concerned with the negative right of preventing the copying of physical material. Hesmondhalgh examines the implications of digitalization for musical production, distribution and consumption, as a particular and distinct case of the dynamics of digitalization in the cultural industries. Halonen-Akatwijuka and Regner study the innovation process of music goods from an organizational point of view. Hart and Moore analyze the optimal ownership structure with a fixed number of agents; the degree of indispensability of the agents is one of the important determinants of the optimal ownership structure.