Thanks perki thats an excellent video. Even though the video is 10 years old it makes clear quantum physics, superconductors and electron manipulation are where the current science is. Electro-magnetics have been studied for literally a 100 years. Transformers are based on electro-magnetic fields, for instance. I think people forget audio is simply electrical signals operating at different frequencies.
Electromagnetic fields. Be forewarned, this involves science...