In the autumn of 2018, Belarus-based paper engineer Aliaksei Zholner started working on a new paper and cardboard organ. It’s a 2.0 version, second to this balloon-powered one from 2017, with fewer keys and regulated by the weight of some books on a cardboard and paper bellows. Zholner likens its sound to a duck decoy call, a squeaky tone resulting from the vibrating materials.

Previously from Zholner: A tiny balloon-powered organ made from paper & cardboard. Plus: More pipe organs, more paper craft, and more videos about how instruments are made.