Something like Alan Lomax's field recordings trapped in Werner Herzog's 'Cave Of Forgotten Dreams'. Reference points include the Nordic folk music traditions currently being kept alive by acts such as Dvergmal, The lost memories evoked in William Basinski's Disintegration Loops, the sublime otherworlds given birth to by Sigur Ros's made up language, and most notably the proto-gothic funeral dirge of Nico's post-Chelsea Girls trilogy of The Marble Index, The End, and Desertshore.