Portals into other realities

"Sound in the form of music can evoke deep emotions in all of us. Words have similar power to evoke emotional reactions and can even lead us to kill each other. No doubt the source of the classic magical words, 'abracadabra' and 'open Sesame', which led to the opening of the cave that contained the treasures of Ali Baba, was based on the idea of the power of words. In the story of Ali Baba and the Forty Thieves, it is the physical cave that is opened by the magical words. At the metaphysical level, the opening leads into the unconscious mind, or, as some would say, into another realm of existence. Intrinsic to both ideas is that powerful words/sounds have potency in themselves. There is clearly more to music than mere pleasure; as some cultures opine, sound can take us into other realities, help us to communicate with other beings, summon up 'demons' and evoke the gods."
—Lynne Hume, Portals: Opening Doorways to Other Realities Through the Senses, 2007.