In English, the word ‘sinister’ suggests a touch of evil, taking its cue from the Latin, in which it denotes the adjective ‘left’ and a perception that the left hand is weaker than the right. As a left-hander myself, I prefer the view that we’re noted for being more artistic than right-handers! But, as a rather pedestrian pianist, I do humbly marvel at performances of keyboard works specifically written for the left hand alone.