Sororicide was a death metal band from Reykjavik, Iceland. Sororicide was founded early 1990 by Gisli (bass/vocals) and Gaui (guitar). To begin with they played heavy thrash metal but soon evolved into death metal. The first gig was in June the same year, but it wasn't until the band won a national band contest in 1991, under the name Infusoria, that they started to get noticed. Soon after they changed the name back to Sororicide and autumn 1991 saw the band enter the studio.