Frakkur was the artist name Jónsi used for his experiments in electronic music.

Working on his own, either at home in Reykjavík, in hotel rooms on tour with Sigur Rós, or later at his boyfriend's house in Boston, Jónsi spent endless hours diving into then-new bits of kit and programming, having fun and seeing how far he could push things.

The legacy is three collections of work totalling 25 tracks collated into one triple album - each made a year or so apart, under slightly different circumstances and with different equipment.