A short documentary about Koumaria 2018. This year we celebrated our tenth anniversay of the residency. We are also partners in the pan-European “Interfaces” Project which is co-funded by the Creative Europe programme of the European Union (http://www.interfacesnetwork.eu/),and so the theme for this years residency is INTERFACES. What is an interface? When is an instrument an interface/an interface an instrument? How does the structure of an interface determine the structure of the art it is used to produce? When is a performer an interface? Can a whole performance be an interface?