|#||Release title||Total tracks||Type of release is||Imprint date||Label|
Jeroen Paul Thesseling began studying bass in 1988 at the Conservatory in Enschede, the Netherlands. During the period 1992-1994 he collaborated with the Dutch death metal band [a=Pestilence] by recording the jazz/fusion-influenced album 'SPHERES' (1993) and touring Europe. In 1995 Jeroen started to study microtonality and developed a 72-tone equal temperament bass. A few years later he decided to concentrate primarily on playing fretless bass guitar. During the period 2003-2005 he has been touring with the flamenco ensemble of guitarist EL PERIQUIN. Since 2005 he participates in the recordings of ENSEMBLE SALAZHAR, a contemporary fusion/ world music project. In 2007 Jeroen joined the German progressive death metal band [a1787823]. He toured North America, Europe and recorded their full-length albums '[r2236537]' (2009) and 'OMNIVIUM' (2011). Besides OBSCURA he rejoined PESTILENCE in October 2009 after a 15-year break, touring North America, South America and recording their sixth studio album 'DOCTRINE' (2011). Thesseling is one of the very few bassists in the metal scene that plays fretless basses.