Piano + Vocal , opera type thing (OMFG REAL PIANO)

I feel the piano could have more bottom. You could possibly get away with scooping the mids slightly too. A little vocal riding might work too, some words could be slightly lower etc. But I do feel this is nitpicking, it sounded nice.
 
I would use a plugin like waves S1 to increase the piano in the stereo spectrum.
As this kind of music don't go well with compressor, riding is the best option.