Chopin was pure genius. He expresses the spirit of the masculine and feminine in his music like no one else.
I love Nocturne in E-flat-the "masculine" left hand must be firm and stable yet somehow light and mobile and towards the end downright floaty yet still in a "masculine" way. The "feminine" right hand delicate and serene yet confident, fast yet never overtaking, and when the left hand floats, taking over the stability without overpowering. I think he must have been a wise man!