Lars Eikind, also known as Lars Eric Si, has been a part of the Scandinavian rock/metal scene for many years both as musician and producer. He has been involved in numerous bands, either as a full-time or session member.

The first band he ever recorded with was the heavy metal/grunge group Jack in the Box, where he had the role of lead singer. He recorded one EP and one full length album with them, before he left the band in 1995. (Jack in the Box came together again in 2010, after 15 years of silence.) After a while he became a part of the band DawG, which never released anything. Then he became the session-bassist for the black metal band Tulus.

He participated on the album "Evil 1999", and the collection "Cold Core Collection". When Tulus evolved into Khold, he became a full-time member of the band. He played on their debut album, "Masterpiss of Pain" before he left the band for personal reasons. During this time, he was also vocalist in the metal band Sensa Anima which included several members from Khold and Tulus. They won the Norwegian grammy "Spellemannsprisen" in 2001. The band only recorded one album, "SinThatic".