Nice work on this piece! I don't know this literature, and know just a few arias from La Traviata
to begin with. I think the work is an effective one and you played it very well. I followed your melody as it switched between hands, and your linked-octaves came off quite well. I think if it were me, someone walking up and down the main aisle and all would have caused me to lose my composure!
Kudos to you for keeping it together. One technical question based upon watching the YouTube: It appears that you play the rapid octaves from the elbow (arm-octaves); have you thought about/tried playing them from the wrist (hand-octaves)?* Once you have the knack of it, it facilitates speed.
*You may be doing this already, but I can't tell for sure given the image quality on the YouTube.
Glad you like the piece! The melody with the octave accompaniment is followable, but ideally I would have liked it to be more prominent. Better still, the octaves quieter..
I've never actually thought about the technical aspect of octave playing! You're probably right that mine come from the elbow. http://www.youtube.com/watch?v=EgJNe3c3Yy4
is the best view angle I can find of my octaves (in particular introduction and coda). I'm not worried about octave speed per se (I've played the relevant Moskowski etude (op. 72 no 6?), Alkan Allegro barbaro, and the first page of the Cziffra Flight of the Bumblebee moreorless at the required tempo), but I should perhaps think about my octaves as my unaccompanied
left hand octaves aren't as good as the right (there is a tendency for things to become locked and the elbow to get stuck against the body). Bizarrely the l.h. is fine when it's in unison or alternating with the r.h. but not nearly as good when on its own e.g. Liszt Funerailles.