With the study of the piano so wide-spread and the number of quality pianists so numerous, a much higher standard of execution is expected. To perform a piece of a degree of special difficulty, it would normally take eight to ten years of practice. Few people are in a position to devote so many years to this study and consequently their playing is uneven and incorrect. It is a known fact that one hand is always stronger and has more dexterity than the other which obviously has an impact on th...