I think that deaf people can also experience the vibration of the sounds of music through the bone transmission, or play violin, I found it while I calculated base-√3 tones for violin, and have preset to the tone-generator, and have practiced and sensed the tones from my jaw bone.

It means also deaf people can become a violinist; having the common denominator with mathematics; the Glass Bead Game.
And Kant said, it is impossible to teach painting to visually impaired people, but is possible to teach geometry; having a common denominator with music; the Glass Bead Game.

By the way, my inexpensive violin's pegs were loosening while playing, therefore I used a piece of sandpaper to get friction force with the wood -peg box, it has become very good.

A pick-up of sound from a violin's bridge will reach today or tomorrow, but if the pick-up hasn't good effect, I hear the vibration of a violin from my jaw bone.

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