dondelelcaro

A facade, even. Like an old Western set. All front wall, nothing in the back.

You probably already know this, but there is a collectors market for player pianos and other automated musical instruments. See AMICA in the US. (Not sure about non automated ones; heavily depends on the instrument.)

The other word for twenty in English is score. Pretty rarely used, however.

Ferrari So expensive, looks great, takes significant capital to maintain, and anyone who has one uses something else when they actually need to do something useful.