In this volume, the basic principles of the administrative functions carried out by the Society for Performing and Mechanical Reproduction Rights (GEMA) are presented comprehensively and academically explained. This work is primarily focused on presenting and explaining the GEMA s internal regulations: the statutes, the deed of assignment, and the distribution plan. Additionally, an overview is presented on the day to day practice of licensing the rights. The main focus of this presentation is the commentary section. The commentary presents in detail and academically considers the statutes as the basis of the organization, the deed of assignment as the foundation of the assignment of rights, and the distribution plan. The new edition brings this work up to date. The copyright law reform ( Zweite Korb ) is taken into consideration as well as the latest judicature and the newest amendments to the GEMA’s deed of assignment and distribution plan.