I have to preface by admitting I'm totally ignorant of the Beethoven piece (and most classical music for that matter), but I really enjoyed this. Your piano playing is excellent and it really holds the piece together as it changes. The drum programming was great, too (I'm sure this was NOT written by Beethoven), the only suggestion I would make is maybe to try fading the snare and hi-hat rolls in slightly.
I was caught completely off guard when the turntables came in at the end, but in a good way, it kept things exciting. Also I don't usually go for turntable samples, but that is because most people who use them select a single sample and repeat it endlessly while real record scratching is more loose and free-form, which is exactly how this sounded.
I agree with the other reviewer that some more dissonance and distortion would have worked for this piece, but as you have heard my own work you can correctly assume I'd say that for the majority of what I hear on NG.
All in all, the combination of classical melody, electronic beats, sound effects and turntables gave this a cool, surreal type feel. -5