Influential Metal act out of Finspång noted the involvement of mentor DAN SWANÖ, a major force on the Swedish music scene renowned for his production and involvement in other acts as diverse as UNICORN, PAN.THY.MONIUM, GODSEND, WOUNDED KNEE and NIGHTINGALE among others. EDGE OF SANITY came together in 1989 upon the disbanding of Swanö's Crossover outfit BREJN DEDD. Guitarist Sami Nerberg was previously with Punk act F.Z.Ö. while Swanö and bassist Anders Lundberg had been in another Punk band by the name of ULANBATOR. The group was rounded out by guitar player Andreas Axelsson and drummer Benny Larsson.

EDGE OF SANITY debuted with the 1989 demo tape 'Euthanasia' with 'Kur-Nu-Gi-A', 'The Dead' and 'The Immortal Rehearsals' all following throughout 1990, since which the band managed to sustain a stable line-up. The act signed to the Black Mark label in 1990 recording their debut 'Nothing But Death Remains' at the legendary Montezuma Studios in January 1991, home previously to THERION, HEXENHAUS, BATHORY, CANDLEMASS and CREMATORY among others. Production credits went out to the band and label mentor Börje 'Boss' Forsberg.

A further demo followed in 1992, billed 'Dead But Dreaming' upfront of a second Black Mark album 'Unorthodox'. These sessions included ex-BREJN DEDD man Anders Mareby on cello. A projected EP, 'When All Is Said', announced for 1993 release, included the MANOWAR cover version 'Blood Of My Enemies'. However, this EP never emerged and EDGE OF SANITY set to work on a third full-length opus, 'Spectral Sorrows', the band tackling 'Blood Of My Enemies' once again. Their 1994 EP 'Until Eternity Ends', assembled from outtakes from 'Spectral Sorrows', contained a version of THE POLICE's hit 'Invisible Sun'.

The band maintained their industrious cycle of releases with the 'Purgatory Afterglow' album in 1994. Do not be fooled by the one credited track on 1996's 'Crimson' album, the song is over 40 minutes in duration. Anders Mareby guested on cello once again whilst OPETH's Mikael Akerfeldt donated vocals and lead guitar solos. Japanese versions added an exclusive track, 'Murder Divided'.

Despite a prolific recording schedule various members of EDGE OF INSANITY found the time to work on other projects. Guitarist 'Dread' (real name Andreas Axelsson) contributed to LUCKY SEVEN and also sang lead vocal on MARDUK's first album. Drummer Benny Larsson also recorded with OPHTHALAMIA under the pseudonym 'Winter', whilst Swanö sang lead vocals for Danish Metallers MACERATION on their 'A Serenade Of Agony' album using the nom de plume of Day Disyraah.

In 1996 Swanö and OPETH vocalist Mikael Akerfeldt created an impromptu retro Metal jam project entitled STEEL. Never intended as a serious venture, STEEL nevertheless attracted the attention of Near Dark Productions who issued two STEEL tracks on a picture disc single in 1998.

The 'Infernal' album, released in February 1997, witnessed the beginnings of band divisions as Andreas Axelson took over main songwriting duties. The guitarist also handled lead vocals on THE BEATLES cover version 'Helter Skelter'. Somewhat surprisingly the second 1997 EDGE OF SANITY album 'Cryptic', arriving in December, found Swanö no longer involved and his position was taken by PAN-THY-MONIUM and DARKIFIED vocalist Robban Karlsson.

Swanö created the project band BLOODBATH with Mikael Akerfelt and KATATONIA men Blackheim and Jonas Renske in 2000. As 2001 came around it emerged that the boundless Swanö had instigated yet another new band project entitled KARABOUDJAN.

EDGE OF SANITY marked a return to action in 2003 with the album 'Crimson II'. This outing would feature the DEAD SUN, PAGANIZER, DERANGED and BLODSRIT credited Rogga Johansson as guest vocalist alongside erstwhile WITHOUT GRIEF frontman Jonas Granvik. Guitar solos would be donated by MEMORY GARDEN's Simon Johansson and MERCYFUL FATE's Mike Wead whilst Clive Nolan of British Progressive Rock band ARENA contributed lyrical input.

Swanö and Johansson would collaborate further, manifesting the RIBSPREADER project that same year. Extending his portfolio even further, Swanö activated "Post-Prog" project SECOND SKY in 2004 for the album 'Skydiving'. He would also provide guest vocals for the 2005 ENFORSAKEN album 'Sinner's Intuition'. Throughout the year his home studio work gained Swanö mixing credentials on albums for EDEN'S FALL, THE PROJECT HATE, ANOTHER LIFE, RIBSPREADER, PAGANIZER, HEARSE, MISERY SPEAKS, SHADOWSPHERE and MILLENCOLIN.

Dan Swanö contributed guest lead vocal tracks to a cover version of MOXY's 'Out Of The Darkness' for inclusion on OVERDRIVE and LOCOMOTIVE BREATH guitarist Janne Stark's November 2006 MOUNTAIN OF POWER tribute collection. Swanö also laid down backing vocals for English Progressive Metal band THRESHOLD's album 'Dead Reckoning'. Swanö's next move was to join DEMIURG, fronted by PAGANIZER and RIBSPREADER mainman Rogga Johansson for the album 'Breath Of The Demiurg', released in February 2007 through Dutch imprint Mascot Records. That summer Swanö produced debut sessions for HAIL OF BULLETS.