I love Chopin's Preludes and Nocturnes, so emotional and expressive. For being recorded with an Iphone the piano really does not sound that bad, the imperfection is definitely felt. The transition from the sampled piano to your recording was a bit awkward, but i think that it worked with the piece. I simply love the atmos at the end, with the crowd, the old organ and band playing a hymn like melody. Very clever.
Great Job!