A little off-topic, but I think it's unfortunate that "piano sound" became so homogenized and standardized and centered on a handful of grand piano models. There isn't the variety and individuality that you have with violin-family instruments. No two of those are going to sound exactly alike and using different string sets/combos, bridges and bows differentiates even further. Harpsichords are also more individual. Now it's usually just the same old Steinway.