Steve Di Giorgio’s & Jeroen Paul Thesseling’s Prog Metal-Fusion Quartet QUADVIUM Signs With Agonia Records
The instrumental progressive metal-fusion quartet QUADVIUM, half in California – half in the Netherlands, founded in late 2019 by American bass player Steve Di Giorgio (Testament, Death) and Dutch bass player Jeroen Paul Thesseling (Obscura, Pestilence) has inked a record deal with Agonia Records in Poland.
Steve Di Giorgio and Jeroen Paul Thesseling are both innovators in bringing a different style of fretless bass playing to metal. Launching a band with two predominantly multi-string fretless bass players is no common occurrence, and the bass-duo felt they needed to take very special and deliberate time to get the right alignment with who is participating and what will be the end result – meaning the right sound and composition to represent this rare vision.
Over time, together with Dutch master drummer Yuma van Eekelen (Our Oceans, Pestilence) and American guitar virtuoso/composer Jennings Smith (Myth Of I, Kaathe) – whose contribution and expertise play a huge part of QUADVIUM – the music began to take shape. The line-up is just the right blend to mix the delicate balance of such a heavy aural offering and a full vocabulary of high level constructed pieces. QUADVIUM is currently finalizing its long-awaited debut album, set to be released in Autumn 2024 via Agonia Records, and set to include artwork by Travis Smith (Amorphis, King Diamond, Cynic).
The group comments: “We are looking very much forward to this long-term collaboration with Agonia Records. As instrumental progressive metal-fusion group we appreciate the opportunity and support from label manager Filip Jesion, which enables us to reach out with this unique musical concept.”

Jennings Smith – guitar, guitar synth
Steve Di Giorgio – bass
Jeroen Paul Thesseling – bass
Yuma van Eekelen – drums
Follow QUADVIUM:
Facebook: https://www.facebook.com/Quadvium/
Instagram: https://instagram.com/quadviumofficial
Steve DiGiorgio:
Website: https://www.stevedigiorgio.com
Press inquiries: lowend@stevedigiorgio.com
Jeroen Paul Thesseling:
Website: https://www.jeroenpaulthesseling.com
Press inquiries: contact@jeroenpaulthesseling.com
Agonia Records:
Website: https://agoniarecords.com
Webshop: https://agoniarecords.com/store
Facebook: https://facebook.com/agoniarecords
X: https://twitter.com/agoniarecords
SoundCloud: https://soundcloud.com/agoniarecords
Bandcamp: https://agoniarecords.bandcamp.com
Instagram: https://instagram.com/agoniarecordsofficial
YouTube: https://youtube.com/AgoniaRec