[sdiy] Where to get special white keys?

[Ingo Debus]

Am 26.02.2009 um 18:58 schrieb John Mahoney:

>>  learn two major scales, one starting on a black, one on a white
>> key and you can play them all. ...
>
> I don't think so. Assuming that each key is one semitone higher  
> than the previous key, a major scale would go like this:
>         white, white, white, black, black, black, black (and then  
> back to white at the octave)

Yes, that was my point. With that pattern you can play six different  
major scales. With another pattern, starting on a black key, you can  
play the remaining six.

Such a keyboard would probably have some markers on it, like the  
fretboard of a guitar.

Ingo