Jon also did a 1 tile piano that is slaved to the original Maxis one, I have included that in the zip file as well.
You can find the originals HERE and my piano recolours HERE.
All can be found in Hobbies > Creativity Cost: 1 tile Keyboard §150, 2 tile Keyboard §2,000 and 1 tile Piano §350.
Artwork by armiel and BV Hotel Coffee Table by me used in the screenshot are not included, all other recolours used in my screenshot can be found HERE.
All files have been compressed and tested in game.
WARNING: These recolours will not recolour the Yasimo F# Symphonator Keyboard by whiterider.