I don't play piano but I ran across this 6'10" steinway self playing piano with a custom glass top. The owner said "no one in the house plays so it plays itself"
Yamaha Disklavier Grand Player Piano - It plays by itself - YouTube
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Stanley: the piano that plays what you tweet | Piano, Playing piano, One twitter
Piano Playing itself - YouTube
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The $1 million piano that plays itself (just as well, because its owners can't)
Self Playing Pianos - Self Playing Grand & Upright Piano Systems | CHP
I Modified My Piano To Play Itself! (DIY Build) - YouTube