This is a beautiful ethereal chant using nine different frequency tuning forks and chanting YHSVH ( Yod Hey Shin Vav Hey) by Jonathan Goldman and Sarah Benson. YHSVH is described by them as the ancient name of Christ and the different tuning fork frequencies are said to be the divine frequencies of creation. I personally have no direct knowledge of this but I can say it is powerful - it is not to be listened to lightly (driving or other activity). I would only recommend it for meditation with the body firmly root to the ground. It deserves your full open attention - a few minutes are eternity.
We have tendency to want to know - science, medicine is very much about wanting to know. I find that for myself the more I know the more I realize how much I don't know. Over time the desire to know, to analyze gets replaced by faith, acceptance and wonder.
Some things will never be known by the analysis of components (frequencies, sounds, words) by effort, by will, by knowledge etc.
Some things we should just experience - they can only be known by the Heart.