Yes, I do believe 'music will be a "revelation" to the cultures of the world'...
Could it be that there is a "One" who will arrive to take us over the "abyss", as mystics call it, into the presence of the spiritual "New Jeruslam", "Grail Castle", "Thule" or what ever term some might be familiar with - via music?
This may seem far fetched but even Jesus sopke of one who is yet to come...
"I have many things yet to say to you, but you cannot bear them now. Although, when he, the Spirit of Truth is come, he will guide you into all truth." (John 16: 12 + 13)
"Nevertheless, I am telling you the truth, it is for your benefit I am going away. For if I do not go away, the helper will by no means come to you; but if I do go my way, I will send him to you. And when that one arrives he will give the world convincing evidence concerning sin and concerning righteousness and concerning judgement; in the first place concerning sin because they are not exercising faith in me; then concerning righteousness, because I am going to the father and you will behold me no longer; then concerning judgement because the ruler of this world has been judged. I have many things yet to say to you, but you are not able to bear them at present. However, when that one arrives, the spirit of truth, he will guide you into all the truth, for he will not speak of his own impulse, but what he hears he will speak, and he will declare to you the things coming. That one will glorify me, because he will receive from what is mine and will declare it to you." (John 16: 7 - 14)
"But the helper, the holy spirit, which the Father shall send in my name, that one will teach you all things and bring back to your minds all the things I told you." (John 14: 26)
"...Nevertheless, when the Son of Man arrives, will he really find faith on the earth?" (Luke 18: 8)
"And I will request the Father and he will give you another helper to be with you forever." (John 14: 16)
Could this "helper" be a singer, an innocent fool that learns wisdom through compassion by suffering with humanity, as brought to life in Wagner's "Parsifal", a man who achieves a primordial consciousness, tranfigures himself in musical harmony and is able to reveal the inner nature and reconcile the world to a new primordial vision of the future, becoming Christ's regent on earth?
Just some personal thoughts I've been mulling over for a couple decades!