I share your interests, indeed. However, I fail to see any connection between quantum physics and the chosen pitch of A above middle C? Likewise, I don't see any distinct relationship between quantum physics and Schumann's or Tesla's work. I think it should be added that while Tesla was undoubtably a genius in his own right, a lot of his work is purposefully misconstrued. After all, he mis-characterized a lot of what he did in order to ensure funding. It's very common to read about the 'free energy from the ionoshpere' that he was presumably capturing, when in fact he was merely converting electricity - and in such huge amounts that the funding for his projects was terminated.
Can you help to connect the dots here?