Hi, some brief comments:
i) Prelude in b: Bach-Siloti, I guess. Serene left hand and a truely desperate right hand, interesting such a contrast.
ii) Siciliano: A pleasure to hear, it´s a pity it´s uncomplete; Siloti or Kempf?
iii) Nun Komm der Heiden Heiland: Again I'd wished to hear the complete piece, you got something interesting here. There are so much good transcriptions: Feinberg, Kempff, Busoni, Friedman, I can´t guess correctly which one is it.
Anyway, congratulations.