Agonizer formed in 1998 with the six-man line-up of Olli Solitanner on vocals, Mika Heinonen playing the keyboard and providing back-up vocals, J-P Perälä and Lasse Löytynoja on guitar, Jussi Tikka on bass and Toni Qvick playing the drums, recording their first demo 'Eternal Night' at Studio Jambo in Iisalmi.
Shortly after recording, vocalist Olli Solitanner left the band, and was replaced by Pasi Kärkkäinen, who lent a distinctly different singing style to the music.
It won 'Demo of the Month' award in Finnish music magazine 'Rumba', and received airplay in England, Brazil, Germany, Greece, Belgium, Peru, The Netherlands, Lithuania, and Spain.
Agonizer initially considered eliminating keyboards altogether, but ultimately decided to bring on Patrik Laine, Joni's younger brother, in that role.
[2][3] In April 2016, Agonizer was signed to highly regarded German Label, 7hard - a Division of 7us media Group, for the worldwide release of their Album "Visions of the Blind".