In this chapter, we argue that sound is a foundational and active force in the co-creation of human social life, central to what we call “Culture-as-Practice” (CAP). Building on the “Culture-as-Interaction” (CAI) framework, we contend that sound—especially in its non-linguistic, rhythmic, and affective forms, operates as a primary mo of social connection, emotional regulation, and cultural expression. Far from being a passive backdrop, sound is shown to shape consciousness through resonance, scaffold shared experiences, and mediate the dynamics of presence and attunement. We structure our argument around two central pillars: (1) sound as a foundation of social connection, which inclus non-verbal vocalization, synchronization, and ritual, and (2) sound, affect, and well-being, which highlights sound’s capacity to bypass cognition and directly influence affective and physiological states. Drawing from fields such as affective neuroscience, anthropology, and phenomenology, we argue that sonic practices offer a unique and embodied pathway to generating well-being. In the final sections, we apply these insights to addiction and anxiety, arguing that disconnection from meaningful sonic and cultural environments contributes to dysregulation, while intentional engagement with sound—through music, ritual, and other richly stimulating practices—can restore connection, coherence, and resilience. Sound, we argue, is not merely expressive but generative: a medium through which the self, society, and shared worlds are continually re-tuned.