Aliaksei Zholner designed an 18-key piano from black paper and cardboard. The strings of this piano are made of stretched paper strips, and when the paper and cardboard hammers hit the strips, the sound comes out. Fryderyk Chopin’s Polonez b-moll, Ludwig van Beethoven’s Für Elise, and Scott Joplin’s The Entertainer can be played on this piano. The brand was made with the name of Zholner and the famous piano producers Bösendorfer and Bechstein.
If you wonder the construction of the piano, you can watch the video below.