Tomi Koivusaari is the rhythm guitarist and former vocalist of the Finnish

Finland

Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 metal band Amorphis

Amorphis

Amorphis is a Finnish heavy metal band started by Jan Rechberger, Tomi Koivusaari, and Esa Holopainen in 1990. Initially, the band was a death metal act, but on later albums they evolved into playing other types of genres, which include heavy metal, progressive metal, and folk metal...

.
He started playing at the age of 12, his first band was Violent Solution formed in 1987, with him on guitars and vocals, Esa Holopainen

Esa Holopainen

Esa Holopainen is a Finnish guitarist who is the lead guitarist, main songwriter and a founding member of Finnish metal band Amorphis and guitarist for Chaosbreed. His influences include Ritchie Blackmore, David Gilmour, John McLaughlin and Petri Walli of Kingston Wall. Holopainen uses ESP guitars...

 on guitars and Jan Rechberger on drums. The band played thrash metal, recorded a demo and an EP. He also formed a death/doom

Death/doom

Death/doom, sometimes writes as death-doom or deathdoom, is an extreme subgenre of heavy metal. It combines the slow tempos and pessimistic or depressive mood of doom metal with the deep growling vocals and double kick drumming of death metal...

 band called Abhorrence in 1989, and recorded a demo and an EP. Both bands broke up in 1990, but Tomi was not a member of Violent Solution since he formed Abhorrence.

In 1990, Tomi, Esa, Jan and bass guitarist Olli-Pekka Laine (who played in Nuxvomica at that time) formed Amorphis

Amorphis

Amorphis is a Finnish heavy metal band started by Jan Rechberger, Tomi Koivusaari, and Esa Holopainen in 1990. Initially, the band was a death metal act, but on later albums they evolved into playing other types of genres, which include heavy metal, progressive metal, and folk metal...

.

In 1996, Tomi formed Ajattara

Ajattara (band)

Ajattara is a five-piece atmospheric black metal band from Helsinki, Finland. They formed in 1996 and are still active. They are signed to Spinefarm Records and have released six albums, their most recent being Murhat, which was released in early 2011....

 with Pasi Koskinen. He used the "Samuel Lempo" name in the band.

With Violent Solution

• Paralysis / Individual Nightmare (1990)
• Period of Depression (1990)

With Amorphis

• Disment of Soul (demo, 1991)
• Amorphis (demo, 1992)
• The Karelian Isthmus
  The Karelian Isthmus
  -2003 Re-release:#"Pilgrimage from Darkness" – 4:32#"Black Embrace" – 3:25#"Privilege of Evil" – 3:50#"Misery Path" – 4:17#"Vulgar Necrolatry" – 3:58#"Excursing from Existence" – 3:06-Personnel:* Tomi Koivusaari − vocals, guitar, six string acoustic guitar...
  
   (album, 1992)
• Privilege of Evil (EP, 1993)
• Tales from the Thousand Lakes
  Tales from the Thousand Lakes
  -Bonus tracks:Tracks 11-13 added from the Black Winter Day EP:-Band members:* Tomi Koivusaari – vocals, rhythm guitar* Esa Holopainen – lead guitar* Olli-Pekka Laine – bass guitar* Jan Rechberger – drums* Kasper Mårtenson – keyboards...
  
   (album, 1994)
• Black Winter Day
  Black Winter Day
  -Personnel:*Tomi Koivusaari – vocals, rhythm guitar*Esa Holopainen – lead guitar*Kasper Martenson – keyboards*Olli-Pekka Laine – bass guitar*Jan Rechberger – drums*With Ville Tuomi: Speech & Spoken Word...
  
   (EP, 1995)
• Elegy
  Elegy (Amorphis album)
  -2004 Digipak release:All songs are live performancesNote: "Against Widows" and "The Castaway" recorded live at Ilosaarirock on July 12, 1997-Personnel:*Pasi Koskinen – vocals*Tomi Koivusaari – vocals, rhythm guitar, acoustic guitar, tambourine...
  
   (album, 1996)
• My Kantele
  My Kantele
  -Personnel:*Esa Holopainen – guitar, acoustic guitar*Pekka Kasari – drums*Tomi Koivusaari – guitar, acoustic guitar, vocals*Pasi Koskinen – vocals*Olli-Pekka Laine – bass guitar*Kim Rantala – keyboards...
  
   (EP, 1997)
• Isle of Joy (bootleg, 1997)
• "Divinity / Northern Lights" (single, 1999)
• Tuonela
  Tuonela (album)
  -Band members:*Pasi Koskinen – vocals*Tomi Koivusaari – rhythm guitar, sitar*Esa Holopainen – lead guitar, acoustic guitar*Olli-Pekka Laine – bass guitar*Pekka Kasari – drums, percussion-Additional musicians:*Santeri Kallio – keyboards...
  
   (album, 1999)
• Story - 10th Anniversary (compilation, 2000)
• Alone (single, 2001)
• Am Universum
  Am Universum
  -Band members:* Pasi Koskinen – vocals* Tomi Koivusaari – rhythm guitar* Esa Holopainen – lead guitar* Niclas Etelävuori – bass guitar* Santeri Kallio − keyboards* Pekka Kasari − drums-Additional musicians:* Sakari Kukko − saxophone...
  
   (album, 2001)
• Far from the Sun
  Far from the Sun
  -American/European re-release bonus tracks:-Personnel:* Pasi Koskinen − vocals* Tomi Koivusaari − rhythm guitar* Esa Holopainen − lead guitar* Santeri Kallio − keyboards* Niclas Etelävuori − bass guitar* Jan Rechberger − drums-Credits:...
  
   (album, 2003)
• Day of Your Beliefs (single, 2003)
• Evil Inside (single, 2003)
• Chapters
  Chapters (Amorphis album)
  -Disc two - DVD:- Personnel :* Amorphis – Producer, Engineer* Dean D. Edington, Jr. – Project Coordinator* Simon Effemey – Producer* Scott Hull – Remastering* Matthew F. Jacobson – Executive Producer* Mikko Karmila – Engineer* Orion Landau – Cover Design...
  
   (best-of compilation, 2003)
• Relapse Singles Series Vol. 4. (split (where Amorphis appears with the self-titled demo), 2004)
• "House of Sleep" (single, 2006)
• Eclipse
  Eclipse (Amorphis album)
  -Credits:* Tomi Joutsen − vocals* Tomi Koivusaari − rhythm guitar* Esa Holopainen − lead guitar* Santeri Kallio − keyboards* Niclas Etelävuori − bass guitar* Jan Rechberger − drums* Marco Hietala − producer, backing vocals* Mikko Karmila - producer...
  
   (album, 2006)
• "The Smoke" (single, 2006)
• Silent Waters (album, 2007)
• "Silver Bride" (single, 2009)
• Skyforger
  Skyforger (album)
  -Chart positions:-Amorphis:*Tomi Joutsen – vocals*Tomi Koivusaari – rhythm guitar*Esa Holopainen – lead guitar*Santeri Kallio – keyboards, synthesizers, piano, organ*Niclas Etelävuori – bass guitar*Jan Rechberger – drums, percussion-Additional Personnel:...
  
   (album, 2009)
• Magic & Mayhem - Tales from the Early Years
  Magic & Mayhem - Tales From the Early Years
  Magic & Mayhem - Tales from the Early Years is a compilation album by the Finnish heavy metal band Amorphis, released on September 15, 2010 in Finland. It's a collection of re-recorded and partially re-arranged songs from their first three studio albums...
  
   (compilation, 2010)
• "You I Need" (single, 2011)
• The Beginning of Times
  The Beginning of Times
  The Beginning of Times had a strong sales debut week, charting at No. 1 on the Finnish Albums Chart and No. 16 on the German Media Control Charts....
  
  (2011)

With Ajattara

• Helvetissä On Syntisen Taivas (demo, 1998)
• Itse (album, 2001)
• Kuolema (album, 2003)
• Tyhjyys (album, 2004)
• "Ilon Juhla" (single)
• "Joulu (single, 2005)
• Äpäre (album, 2006)
• "Sika" (single, 2006)