Regarding Scriabin, that's a very correct observation! It is said that Szymanowski often had the scores of both Chopin and Scriabin lying around where he lived, also when he was composing. I don't know how familiar he was with Scriabin's LATE style at this time (the music here dates from 1915, and Szymanowski had just returned to Ukraine after extensive traveling in europe and north africa), but he was surely familiar with the earlier works. For me, Szymanowski seems to have made a very succesful blend of the styles of Ravel/Debussy on one hand (he spent a fair amount of time in Paris, and let's not forget that he titled the pieces in french although they weren't written there!) and Scriabin on the other. Debussy and Ravel were both after writing in a manner that sounded like a free improvisation - to me, Szymanowski went way ahead of these two, creating something music more wild and free of restraints in form...