Instrument Tricks
The piano's heard through the voice?
The piano notes are heard without striking any keys!!
　Is this "magic-like" phenomenon really possible? You may think this to yourself, but surprisingly, it is easily achieved.
　Open the lid of the piano so as to expose the piano's bowstrings. First off, the damper is raised. Then, in a loud voice, let's raise our voices to a certain frequency. Then, the bowstring of equal frequency to our voice will faintly be heard. This happens because our voice waves cause the corresponding bowstring to resonate, thus resulting in sound produced by the piano's bowstring.