Cacophony /kəˈkɒf(ə)ni/ ~ A harsh discordant mixture of sounds.
Acoustics is the branch of physics concerned with the study of sound (mechanical waves in gases, liquids, and solids). A scientist who works in the field of acoustics is an acoustician. Acoustics is the science concerned with the production, control, transmission, reception, and effects of sound.
Mellifluous /mɛˈlɪflʊəs/ ~ (Of a sound) Pleasingly smooth and musical to hear.
In Hinduism and yogic philosophy, the cosmic sound is the auditory manifestation of Brahman, the Absolute Truth or Ultimate Reality. It is verbalized as the mantra, Om (also spelled Aum). According to the Bhagavad Gita, “God is the sound of Om.”
The cosmic sound is associated with the creation of the universe. It is believed that before creation, the humming of energy existed. That energy became the vibration of creation and so the universe was created out of the ever-present sound of Om. This cosmic sound and its vibration still exists around and inside everyone.