Name: Sea Organ(https://en.wikipedia.org/wiki/Sea_organ) is an architectural sound art instrument which is located at Zadar, Croatia. It is also an experimental musical instrument.

Wikidata Item: https://www.wikidata.org/wiki/Q2268940

Relation: The Sea Organ does not typically relate to any other organs since it requires the sea waves for it to work and it is still an experimental musical instrument.

Description: For the Sea Organ to work it requires sea waves and it has tubes located underneath a large set of marble steps.