The main part I made is animation. It was automatically generated by the mscz2anim add-on.(https://github.com/Sandy10000/mscz2anim)

Click here for the demonstration video. Video is set to autoplay off, mute.(https://sandy10000.github.io/contents/demonstration/mscz2anim/BWV846Prelude/piano/video/)

The following models and materials were used. Some have been changed by me.

The name of the assigned material and the material name of the actual piano part may be different.

Music
The Well-Tempered Clavier Vol 1 No. 1 Prelude
Creater: JOHANN SEBASTIAN BACH
License: Public domain

Piano model
Steinway D274
Creater: seavenois
License: CC-0
URL: https://www.blendswap.com/blend/7279

Material of wooden parts
Procedural Pine Wood
Creater: deerel
License: CC-0
URL: https://www.blendswap.com/blend/21875
Black painted wood material: PineWoodPainted
Unpainted wood material: PineWood

Material of metal parts
Metal Materials Pack for Cycles
Creater: elbrujodelatribu
License: CC-0
URL: https://www.blendswap.com/blend/10120
Cast iron plate: AnodizedMetal
Pedal, wheel, hinge: Brass
Pins, strings, bolts: StainlessSteel