Jeroen Paul Thesseling (1971) followed his first classical violin lessons at the age of 7 and started his study bass guitar in 1988 at the ArtEZ School of
Music in Enschede, the Netherlands. After playing metal and jazz in his late teenage years he collaborated with the Dutch group PESTILENCE from
1992 till 1994, recording their jazz-fusion influenced album 'SPHERES' (1993). Since 1995 he experimented with microtonal octave divisions, which
resulted in 'HAFNIUM' - study in 72-tone equal temperament (1999) and 'ARGON' - study in 18-tone equal temperament (2000). In 2005 he
recorded his first fretless work with the studio project ENSEMBLE SALAZHAR. From 2007 till 2011 he collaborated with the German group OBSCURA
with whom he recorded the albums 'COSMOGENESIS' (2009) and 'OMNIVIUM' (2011). During the period 2009-2012 he rejoined PESTILENCE after a
15-year break, recording the album 'DOCTRINE' (2011). Since 2011 Jeroen plays 7-string fretless basses strung with a subcontra F#-tuning. Late 2014 he founded
the jazz-fusion group SALAZH TRIO with Dutch former ENSEMBLE SALAZHAR pianist Hans Grotenbreg - and later on completed with legendary Cuban drummer/
percussionist Horacio 'El Negro' Hernández. Their debut work 'CIRCULATIONS' (2017) is available in digital download format on
Amazon and other platforms.
SALAZH TRIO is currently working on a second studio album, named 'SATURATIONS'.