Considering that consciousness is byproduct of Biochemical mass which produce inside itself sound and light Hallucinations it is possible that certain type of sound can be trigger for inducing out of body experience.
It is nothing new Ancient Civilisations known that and practice trips into higher stages of perception. That knowledge is key for self transformation and transformation of physical world.
With that practice they bring knowledge of technology, spirituality, metaphysics, economic growth, laws and other things crucial for developing healthy communities which are friendly to nature and supporting natural laws.
