Gregory Shir, musical inventor
from Gregory Shir
Equally-Spaced
Piano Keyboard
U.S. Patent No. 9064478
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Attention all piano players!
The modern piano has a manufacturing defect!
Mozart's piano had equal-spaced keys. Yours doesn't!
For more information, go to

MozartBestPiano.com
For more information, see Gregory's websites:
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GregoryShir.com |
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© 2015 Gregory Shir |
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also from Gregory Shir: |
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