Tanja Tiekso is a researcher, writer, and a musician from Helsinki. Tiekso has specialized especially in the theories of avantgarde, experimental art, sound art, and contemporary music. Tiekso’s dissertation Todellista musiikkia. Kokeellisuuden idea musiikin avantgardemanifesteissa (Poesia) was completed in 2013. The work of essays Fantasma (S&S, 2022) is her debut literary work.