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Everything about the Terpstra: terpstrakeyboard.com/
Part 1/2 is about the keyboard layout and shows why the Terpstra is 12 times easier to learn and play than the classical keyboard, by taking a look at the definition of a generalized or isomorphic keyboard: an instrument having the keys arranged in a symmetrical manner, so that notes occupying the same relative position always make the same interval with each other.
A generalized keyboard makes it possible for any passage, chord, or combination of any kind, to have exactly the same form under the fingers, in whatever key it is played - not only for the standard tuning of 12 notes per octave, but also for any traditional tuning system (indian, arabic, chinese, etc) and any other microtonal layout.
The Terpstra Keyboard was an American Festival of Microtonal Music production made with support from Maldeb Foundation. Only 2 prototypes were ever made. It was available for a limited period, in a limited amount and at a fraction of the market price at:
igg.me/at/terpstra/
Part 2/2 of this video will be about the advanced technical specifications of the Terpstra.
Watch Siemen Terpstra talking about his keyboard and see it in action:
• Discovering the 1st Ge...
See the Toronto prototype in a professional production studio:
• Uncovering the other 1...