 He collaborated with Jóhann Jóhannsson and released an album called "Dip", then with Emilíana Torrini on her album "Love in the Time of Science".He also played in Grindverk with Einar Örn and Hilmar Örn Hilmarsson, and more recently in a duet called Steintryggur with Steingrímur Guðmundsson.Sigtryggur has also written articles for the radiostation Bylgjan, and newspapers "Mannlif", "Morgunblaðið", "Vísir" and "Bleikt og Blátt".