Generalmusic, with their SK 76 keyboard, for some reason decided to have shorter keys, not narrower, but actually shorter than standard size keys. In the beginning, I never really knew the reason, but everytime I played certain chords, especially fuller ones, that require many black keys to be pressed, I felt as if my fingers were always hitting the panel behind the keys. After some careful comparison, I realized the difference. It really didn't help in improving my impression of Generalmusic.