3ds and lwo files are very easily converted and you did not ask for any morphs.
And both the models linked at the DAZ and CP store are posable.
Say what you actually want and do not rely on people trying to read your mind.
I see. What I should have said was:
Has anyone seen a medium- to high-poly grand piano made in the last couple of years in .pp2 or .dsf format with a closed-lid option and DAZ mats?
And the answer would be: No. Then I would logically conclude that the only way to obtain the item I want is to build my own. This is not a bad idea anyway, really.
Thank you to the others who responded.