Starting from the major distinction between in-time and outside-of-time processing of the sounds, this volume provides a conceptual and operational framework for dealing with sounds in a real-time listening situation, relying heavily on the theoretical groundings of ecology, cybernetics, and systems theory, and stressing the role of epistemic interactions with the sounds. These interactions are considered from different perspectives, bringing together insights from previous theoretical groundings and more recent empirical research. The author’s findings are framed within the context of the broader field of enactive and embodied cognition, recent action and perception studies, and the emerging field of neurophenomenology and dynamical systems theory. This volume will particularly appeal to scholars and researchers interested in the intersection between music, philosophy, and/or psychology.