10 years ago by
A Pianist
This simple question requires an answer whose complexity is far beyond the scope of this forum. In a nutshell, yes and no. Of course, don't slide in and out of the black keys in a C major scale, that would be senseless. But some sort of subtle horizontal or lateral movement of the arm can substitute for the in out movements I showed in midair in my DVD, and lend a sense of phrase direction and undulating shape to the scale, which risks otherwise becoming a mechanical barrage of notes. There are many ways of doing this, and you have to experiment.