In Vocal Streams, Agustín Genoud explores the voice as a living field. Drawing on decades of performance, workshops, and theoretical inquiry, he reimagines vocality by tracing unexpected connections between the human body and the spaces, machines, and histories that shape the voice. Blending essay, theory, autobiography, and practical exercises drawnfrom his Trans-Synthetic Vocal Workshops, the book follows the voice through bodily organs, resonant caves, microphones, ancestral architecture, animal songs, and AI-generated voices. Along the way, it asks where voices begin and end, how they shape the boundaries between inside and outside, and what becomes possible when we stop treating the voice as exclusively human. At once intimate and speculative, Vocal Streams is both a meditation on singing and a practical invitation to sing.