What does the world and its cities sound like as an orchestra? What kind of aural atmosphere do the Arctic forest soundscapes and melting glaciers form with a mangrove wetlands sounds? During 2010s, Helsinki-based media artist and music producer Mikko H. Haapoja has recorded Nordic nature sounds and several cities like Istanbul, New York, México, Paris, Berlin, Tokyo, Helsinki, Bangkok and Hongkong. By mixing multiple sonic environments together, Haapoja creates unheard worlds. Haapoja’s earlier works, like The Routes of Helsinki have been exhibited and performed in various galleries and festivals for example in Helsinki and New York.