Guðlaugur contributed to multiple albums by Megas, the Icelandic rock father, as a guitarist, arranger and composer. His first contribution was in 1987 for the album "Loftmynd" and in 1988 he appeared again on "Höfuðlausnir," which featured Björk and Rose McDowell as backing vocalists. In 1990 Guðlaugur added guitars on "Hættuleg Hljómsveit & Glæpakvendið Stella", an album featuring The Sugarcubes. In 1992 appeared on "Þrír Blóðdropar", an album with the addition of Bubbi Morthens, Móeiður Júníusdóttir, and drummer Sigtryggur Baldursson. "Drög að Upprisu" followed in 1994.