 He has composed music for the Icelandic Dance Company (Open Source), the National Theatre of Iceland (Volva), and films and installations such as "Welcome" and "Music for Furniture" with Olafur Thordason, "Spatial Meditation" with Claudia Hill, and "When it was Blue" with filmmaker Jennifer Reeves.Sverrisson founded Seria, an ensemble featuring Amedeo Pace, Ólöf Arnalds, David Thor Jonsson, Anthony Burr, Eyvind Kang, and Hildur Guðnadóttir in 2005.He released "Seria" in 2006 and "Seria ll" in 2010.