Well…these might look like bellows but it isn’t a musical instrument, although the product relates with sounds. This is an accordion-styled speaker that is highly portable. It is a foldable amplified speaker that can run on 2AAA batteries. “The accordion-style design creates a large resonance chamber and makes the sound richer than most other small speakers.”

This accordion styled USB speaker is priced at $18.00.

[source: designwarehousesantafe.com]