There is a sound inside of my ears which is like a meditative man inviting a gong from time to time. This noise is the divine sound of my heartbeat, but as a child I was convinced that there was a man inside of me. Perhaps I was more correct then than I am now - the mysteries of what we believe are the veils which we use to conceal reality.
The sounds of a waterfall remind you to check into your consciousness - are you using music correctly or just to cover up your own thoughts? Are you mindful of the voices in your head or are you going to a doctor about them? The wisdom within us is like the Excalibur being thrown into the lake; who will retrieve our weapon of truth?
Can you hear when someone is talking, or do you simply repeat their words in your own mind? Are you able to listen to what they aren't saying, or are you stuck on the literal? Is the reason for hiding the same reason that we stop listening to our inner gong?
In 2018 there's time for retreating into the silence and listening to the thoughts. I say 'the' thoughts because they may or may not belong to you. Yoga teaches that watching the thoughts go by as we watch clouds go by assists us in finding our truth in the sky, instead of wanting to perceive that which will float away anyways. The noise in your brain is who you are, and yet you are so much more than that.