An eight-string guitar is a guitar with eight strings, or one more than the Russian guitar's seven. Eight-string guitars are less common than six- and seven-string guitars, but they are used by a few classical, jazz, and metal guitarists. The eight-string guitar allows a wider tonal range, or non-standard tunings, or both.

Meshuggah is a Swedish extreme metal band formed in Umeå in 1987. Since 2004, the band's lineup consists of founding members Jens Kidman (vocals) and Fredrik Thordendal (guitar), alongside guitarist Mårten Hagström, drummer Tomas Haake and bassist Dick Lövgren. Since its formation, the band has released nine studio albums, six EPs and eight music videos. Their latest studio album, Immutable, was released in April 2022 via Atomic Fire Records.