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bjoli
Could I maybe get a better comparison to the regular piano? I'd like to know why some keys are labeled non-tonal.
j_rcht
The four labeled keys are visual cues for an alternative music notation called Dodeka. For more information, please feel free to watch this video: https://www.youtube.com/watch?v=szhNwuc7YdU&frags=pl%2Cwn and/or this article: http://www.dodeka.info/dodeka-blog/how-to-read-dodeka-sheet-...
bjoli
I might be a bit conservative, but this seems like a regular chromatic keyboard and the music notation seems to add little readability and I can't see much advantage. I am however speaking as a very notebound musician (professional bassoon player).

What are your experience with beginners?

j_rcht
Yes, you are not quite the target audience. :-). True, it's a chromatic and isomorphic layout as you can reproduce the same interval/pattern wherever on the keyboard to produce a specific chord, scale, piece. As for our experience, we conducted a quick study with beginners and the results (although small) are quite convincing, in particular with regard to note recognition and speed of play. See for yourself: http://www.dodeka.info/dodeka-blog/study-on-dodeka-easier-wa...