Modern Science proposes ( Michio kaku in his "Parallel Worlds") proposed that the Universe itself is perhaps a 'symphony of strings and "mind of God " that Einstein told eloquently about is but 'Cosmic -music' resonating throughout Hyperspace.

Thus , after multiple-Universes - Theory & 'String- theory are almost accepted, Expert mental Cosmology is ,now, singing in chorus with vedantic realisation that (with inspiration and expiration 'Brahma', universes are created and destroyed). And this process is endless and infinite. 'OM' is not a vocal sound but Cosmic Vibration ( may be from string or even beyond) and Sages in India had been telling about that for thousands of years.(When we practice OM, we are only trying to simulate it vocally