Your classical music background gives you a cool, unique insight into this general issue of Western society, but it also seems to be creating blindspots in your worldview since you seem to believe music mirrors other aspects of society.
First, your assertion of the supriority of classical music is odd. Even when such music was "popular," it wasn't the most popular form of music. There has always been folk music. During Beethoven's time, the average person wasn't listening to him, they were listening to whichever minstrel played shows at their local hole. Rap is folk music. Rock is folk music. To compare them to classical music is to compare apples and oranges or, to keep with your analogy, organic grass-fed chicken to a rich chocolate cake. They serve entirely different purposes.
And the stuff about frequency seems suspect. Milennia before European classical music ever existed with its supposed divine frequencies, African and South American tribes were playing drum rhythms that could put dozens of dancers into a several day trance. If you're arguing that there's something in traditional Western music that is natural and good, then I would imagine that thousands of uears of evolution would have figured that out before some 17th century composer.
Regardless, your idea that deviating from Western tradition is bringing about America's downfall doesn't make much sense. Western traditions didn't originate in a vaccuum. Just like modern practices, they arose as a reaction to what came before. You leveled the argument at
@DeJulez that he'd been raised to value rap music, but it's pretty obvious that you've been raised to value a tradition sysyem that has only in the last three or four hundred years of human existence shown any viability for mass governance. Where was Western tradition when the Babylonians were redefining civilization? Or the Egyptians? Or the Persians? Or the Mayans? Where was Western tradition when the Mongols were sweeping across Europe or when Timbuktu was one of the literary capitals of the world or when the Zulus were changing warfare?
You're claiming that this relatively new tradition is somehow the UberTradition, which is fine, but you're arguing that it's longevity and widespread dominance prove it's effectiveness when both it's longevity and reach are historically very tame.