The Chromatone CT-312 is a Wholetone sythesiser with 312 keys, instead of the standard register of 88. These are not 312 separate pitches however, but uses the Uniform keyboard paradigm to replicate notes across the board. The advantage of this is not having to stretch awkwardly to reach a key, as it will be replicated in a slightly more convenient location. It was a layout developed by Paul von Janko in 1882, called the Janko Keyboard.
This helpful chart assists in the explanation of the layout, and I've included a decipher of it below.
The video after the break shows one gentleman showing his skills with 312 keys, performing the Super Mario Bros theme with bewildering ease. Last time I saw that being played was on an 11-string bass, so it evidently has some reputation amongst extreme musicians...
Continue reading 312-Key Chromatone Keyboard.
