I think this should be limited to a single piece (i.e. a single sonata or waltz rather than a set of waltzes or a complete set of sonatas. A list of possible choices would be even better as I am hoping to discover some that I have yet to hear.
My fist choice today, and it varies between a few different pieces depending on my mood, would be:
Lipatti - Ravel’s Alborada del Gracioso.
