Also, I find moving your whole arm down helps. That way your arm and the piano keys are perpendicular. Makes it easier to hit the notes right on, otherwise your hand is kind of twisted.
Another thing is to get your hand in place before actually hitting the keys.
Yes, and the movement should be slightly elliptical, rather than a straight horizontal shift. In other words, the movement arcs toward you as you leave the bass note, and arcs toward the fallboard as you leave the third beat. I've found this to be dramatically more accurate than a strict quick shift.Best,ML
This is of the utmost importance - I find that this, coupled with the circular motion of which I spoke, allows for a great deal of accuracy. When these shifts are fast, sometimes it is difficult to be in position well before the note is to be struck, and rather, the bass note must be played while the arm is in motion. I find, in my own experience, that the halting above the key which often follows a quick shift, if improperly done, can cause a slight bit of tension which is enough to cause a mistake. Nevertheless, prepare - always!Well said, Steve.Best,ML
Michael LangloisYour suggestion of moving toward the first beat elliptically gets really you there faster and with less tension than a straight sideways movement. However, when I arc towards the lower first beat note, my left arm and hand seem to gravitate towards the outer edge of the white keys as Thierry13 has suggested.