There's more than one artist under this name:
1. Thorns (formed as Stigma Diabolicum, but changed name to Thorns after two years) is a Norwegian black metal band, masterminded by Blackthorn (Snorre W. Ruch - also in Mayhem and Satyricon). They made two highly influential demos in the early 90's, Grymyrk and Trøndertun, but have only released one full-length album, since the band was founded, in 1989.
1) Spire - An Experimental Black Metal band from Brisbane, Australia. ---------------- 2) Jake Perrine (aka Spire) is a composer / producer / dj / performance artist currently resding in seattle washington. He performs dj / live laptop sets, as well as incorporating other media such as theatre, dance, voice and video. As well, Jake is a producer, remixer, masting engineer working with talented musicians to raise the bar on musicality, audio quality and sonic design.
Sirius: (1) Portuguese Black Metal band 1998-2002; (2) German Trash Metal band; (3) Norwegian rapper from Vestfold; (4) Greek Uplifting Trance artist; (5) Hong Kong Hard Rock Band (1) The black metal band Sirius was formed in 1998 and eventually attracted the interest of Samoth (ex-Emperor, who signed the band to his Nocturnal Art Productions label. Classic symphonic black metal is the order of the day here...