I can see some real advantages to this layout. There are only two key shapes rather than twelve, so transposing at sight would become much easier. A printed sta

I can see some real advantages to this layout. There are only two key shapes rather than twelve, so transposing at sight would become much easier. A printed stave would span sixteen semitones rather than thirteen. The hand positions for chords and scales look about as comfortable as a normal piano. I thought this keyboard layout might make the pianist's hand-span one tone wider, but unfortunately, that wouldn't be the case. A normal piano spaces its black keys further apart than its white keys. On my digital piano, an isomorphic layout would bring the raised keys about 4mm closer together, which seems unplayable - but leaving the octave span unchanged would win those 4mm back. It would be much more difficult to reposition your hands without looking at them, but changing the texture of the white keys and black keys might help.