Gerben Bielderman is a Dutch multi-instrumentalist from Laren (Gelderland), trained at the Herman Brood Academie and the Conservatorium van Amsterdam. He plays bass, guitar and vocals across several bands simultaneously: psych-rock trio Pauw, Achterhoek punk-stoner-hardcore outfit Helm Op, and his own experimental project Bieldermann. He is also bassist in post-metal supergroup Iron Jinn, whose members come from bands including The Devil's Blood, Birth of Joy and Shaking Godspeed. Bielderman once qualified for the Popronde with three different bands at the same time - a rare feat.
Iron Jinn released the 18-minute single 'The Futurist' as a preview of their second studio album, which will be released in September 2026 via Suburban Records.
Iron Jinn is holding an album release party on 19 September 2026 at Doornroosje in Nijmegen for their second studio album.
Bielderman performed as bassist at a Rage Against the Machine tribute show at De Peppel in Zeist, together with drummer Jesper Albers (Paceshifters).
Iron Jinn released 'Live at Roadburn', a live recording of their performance at the Roadburn Festival 2023 in Tilburg.
