Karl-Erik Sigbjörn Birt Berglund is an artist and musician based in Stockholm, Sweden.

He is currently finishing his Masters degree in Fine Art at Konstfack University of Arts, Craft and Design.

Other projects that he is involved in are the following:
Seroconversion – A queer noise project together with Johan Sundell
Kronofonika – A cassette label together with Magnus Lenneskog
Arkivet för Rosa Brus – A queer sound archive project together with Anna Giertz and Johan Sundell