Hekla is the project of Icelandic composer, vocalist and theremin virtuoso Hekla Magnúsdóttir. She has announced the release of a new album called Xiuxiuejar which will be out on September 9th via Panthom Limb. “Enn og Aftur” is the first excerpt. t was written and recorded in January… and it kind of sounds like a dark January here in Iceland,” Hekla says about the track.