It looks more like a typewriter to most people. But it is indeed the latest keyboard based on Janko keyboard layout designed by Paul von Janko back in 1882. As a pianist, you will appreciate what this innovative, yet having centuries old history keyboard can help you achieve finger stretch over 11th notes!
Chromatone is a Japanese company that created the CT-312. Indicated in the name, it has 312 keys!! about 4 times the size of 88-keys piano. But don’t worry, it was stacked up nicely for you to stretch wider interval easily.

Figure 1: Janko keyboard layout.

Figure 2: Chromatone CT-312
Watch the CT-312 in action in this funky tune - Together by a Japanese artist 喜多崎幸弘. This is a very nice tune!
Reference: Technabob
Technorati Tags: chromatone, janko, japan, keyboard, mario, music, piano, synthesizer, CT-312
{ 2 comments… read them below or add one }
that thing looks like a computer keyboard. basically it looks very confusing and impossible to play.
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Where can i buy one?! :(( it’ really hard to track one down! i you guys have any idea email me at: mchncl [at] gmail [dot] com
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