Örn Hilmarsson (HÖH) (keyboards and synthetic drums), Sigtryggur Baldursson (drums/percussion and Þorsteinn Magnússon (electric guitar).A few songs recorded by the Elgar Sisters came to light via Björks's solo career and on Guðlaugur's solo album released in late 2005. Other music projects Hættuleg Hljómsveit ("The Dangerous Orchestra") was a group in which he participated along Magnús Þór Jónsson (Megas), Björk, Birgir Baldursson, and Haraldur Þorsteinsson. This group, which was active from 1990-1991 was established after the release of Hættuleg hljómsveit & glæpakvendið Stella, an album by Megas in 1990. The band did many concerts in southwestern Iceland, in the outskirts of Reykjavík and later in rural areas of Northern Iceland. By this period Björk was no longer a member. Hættuleg Hljómsveit never released a record. MÖK Trio was a group formed by bassist Tómas Magnús Tómasson (mainly known by his work in Stuðmenn), Hilmar Örn Hilmarsson and Guðlaugur. In fact, the name stemmed from the initials corresponding to the middle name of each member. Their first gig was approximately in 1992. MÖK Trio did not play regularly and they never released an album. Their last presentation was in August 2001 at Galdrahátíðin á Ströndum, Reykjavík. INRI was a project of Magnús Jensson. Guðlaugur joined Magnús and played extensively through Iceland in irregular periods from 1993. Some tracks were recorded in 1995. Gvdl was a group created in 2001 with Hilmar Örn Hilmarsson and bassist Georg Bjarnason for the arrival of the American band Fuck. In fact, the sequence Gvdl corresponds to Fuck with each letter switched to the next one in the alphabet. Collaborations Psychic TV In 1984 Guðlaugur added guitars on Psychic TV's album Those Who Do Not. This work was produced by Hilmar Örn Hilmarsson and Guðlaugur and used one of his inventions, the P-Orridgemeter. It was a device that could be programmed with any given frequency and was activated to make an identical structure and pattern for other sampled sound. By this means, digital or sound samples were "played" by individuals who were not physically present. For instance, a vocalist could activate a bell sound. This could be recorded as an identical pattern and then the voice was erased.In 1987 these tracks were reissued with a different name, Live in Reykjavik, an album that was released by Temple Records, the record label owned by Genesis P-Orridge. Megas Guðlaugur contributed to multiple albums by Megas, the Icelandic rock father,