Once again dear friend, you prove in a completely reasoned manner, and without the shadow of a single doubt (the slightest doubt!) that the parallel between classical and metal music (note the singular form) is therefore so close that we can only distinguish between the two a few superficial elements, useless for the purposes of any serious analysis worthy of the name. Consubstantial and inseparable matters, forming the proverbial "one" sought by Plato, and found by you. You demonstrate that it was in fact only a matter of time (and effort!) before the inevitable advance of music became indifferentiality of styles and genres of what was agreed to archaically qualify as "metal" and "classical".
I could not, would not have conceived of a more illustrious prose such as the one written heretofore; it is by extension my greatest honour and privilege to attribute to you, by means of a digital reconnaissance badge, my most eternal and ineffable gratitude! May the Gods ever be in your presence, and cover your every step with silk, gold and myrrh, such as to soften the burden of life until you reach the heavens!