Hi goldentone,
This is indeed a very good rendition of this prelude, which, I think, suggests a lament. You etch the melodic line nicely throughout and pay close attention to touch--legato, tenuto, portato, etc. Very good work!
I read in the Dover Edition (based on the Music Publishing House Edition, Moscow) that the prelude's theme actually comes from a fragment of an unfinished Ballade from 1888.