Music is experienced as an artistic and cultural practice, but its basic material is sound, a physical phenomenon that can be studied through vibration, frequency, amplitude, resonance and acoustics. Indian musical traditions provide a rich context for examining this relationship because concepts such as Naad, Swar, Shruti, Raga and Tala describe different aspects of organized sound and musical experience. This paper develops an interdisciplinary perspective connecting Indian music with the physics of sound and contemporary music therapy. It examines how vibration becomes musical sound, how the acoustic properties of instruments shape musical experience, and how organized pitch, timbre and rhythm are perceived by listeners. The paper then considers evidence concerning emotional, cognitive and physiological responses to music and examines the therapeutic possibilities of Indian musical practices. Research on Indian classical music indicates that ragas can produce different emotional responses, while broader music research shows relationships between musical listening, neural activity, stress regulation, attention and motor processes. At the same time, evidence does not support the claim that particular frequencies automatically cure specific diseases. Music therapy must also be distinguished from ordinary music listening because professional music therapy involves intentional, individualized interventions conducted by trained practitioners. The paper proposes an interdisciplinary framework in which musical stimulus, physical characteristics of sound, auditory perception, neural and physiological processing, emotional response and therapeutic outcomes are connected. This framework provides a basis for future research combining musicology, acoustics, psychology, neuroscience and music therapy within the broader perspective of Indian Knowledge Systems.