I finished it about 4 months ago or so, but now I need something reasonably hard to perform to some people, and clair de lune is really impressive if you play it right. Anyway, I was reading a different copy of the sheet music, and in this different version the long left hand arpeggios are played with BOTH HANDS, is this right? It would certainly be easier and more flowing if it was. How do you play it?

U can do that if u want to. But playing it with the left will be more correct and definately more `visually stunning`.