[1] Espvall's early career included work with Arabian music ensemble Sumer and with Projektor 7, a silent movie orchestra formed by members of Swedish pop group Komeda.

[4] 2006 also saw the release of Espvall's first solo album, Nimis & Arx, named after the large-scale sculptures erected in the micronation of Ladonia by Swedish artist Lars Vilks.

[6] 2009's Overloaded Ark tilted toward extended psychedelic jams, featuring members of Ghost Junzo Tateiwa and Kazuo Ogino as well as ancient music specialist Haruo Kondo.

The album's varied instrumentation included acoustic and electric guitars, cello, organ, shō, banjo, renaissance harp, rauschpfeife, crumhorn, cornamuse, hurdy-gurdy, recorders, piano, frame drums, darbuka, riq, and electronics.

She has been a member of the touring bands for Vashti Bunyan, Damon and Naomi, Ghost, and Marissa Nadler; she has made guest appearances on records by Bert Jansch, Arborea, and Charalambides, among others.