Hello all!  Whether a piano made of concrete exists or not, in
Sweden the term "concrete piano" is a nickname for the ubiquitous
"tank-busters" (or tank-stoppers, at the very least) set up along
our coasts during World War II to prevent foreign invasion.  Being
virtually indestructible, many of them still exist, and a line of
them is used forming the base of Landskrona's sculpture park.

But what would you play on a concrete piano?  Perhaps "la musique
concrete"?

Best regards from sunny Stockholm,
Christofer Noering