Meshuggah is a Swedish five-piece experimental metal band formed in 1987. Meshuggah's line-up has primarily consisted of founding members vocalist Jens Kidman and guitarist Fredrik Thordendal, drummer Tomas Haake, who joined in 1990, and rhythm guitarist Mårten Hagström, who joined in 1994, while going through a number of bassists. Since 2004, the spot has been held by Dick Lövgren. Meshuggah first attracted international attention with the 1995 release Destroy Erase Improve for its fusion of fast-tempo death metal, thrash metal and progressive metal. Since their 2002 album Nothing, Meshuggah uses eight-string guitars and downtuned, groovy riffs. Meshuggah has become known for its complex, innovative and precise songwriting and musicianship, and polyrhythmic song structures.