I've shared Korby's Cheers Theme rendition before:
I absolutely love how his piano sounds. For an acoustic, it's quite small and compact.
I recently saw his new tutorial for Gillian Welch's song 'Hashtag':
There's a top shot that shows some of the innards of this tiny piano:

I've never seen such a piano before, but I find it to be utterly charming. The size is just perfect for most songs and many pieces... after all isn't 88 keys a huge overkill for many people?
Does anyone know more about which piano this is or why this size of acoustic piano isn't more popular?