How did the way people looked at music affect the interactions among different groups and individuals in the course of the 20th century? This volume presents a number of case examples from various musical genres and thus offers many insights into both general and genre-specific figurations of musical communication. This ranges from direct live acts to political productions, which cause inclusive and exclusive mechanisms to become active in communication processes taking place at various levels. The contributions to this volume show how, and why, opportunities for communication arise during musical activities which can lead to either complete harmony or fierce dissonance.