Artists like Arjen Lucassen

Lunatic Soul is a progressive rock side-project founded by Riverside vocalist and bass guitarist Mariusz Duda in 2008. Originally conceived to allow him to explore genres outside of rock, the project was described by Duda in 2014 as progressive, ambient, oriental, and electronic. Lunatic Soul has released eight albums to date. The most recent, The World Under Unsun, came out in October 2025.

Symphony X is an American progressive metal band from Middletown, New Jersey. Founded in 1994, the band consists of guitarist Michael Romeo, keyboardist Michael Pinnella, drummer Jason Rullo, lead vocalist Russell Allen and bassist Michael LePond.

Haken are an English progressive metal band formed in 2007 by multi-instrumentalist Richard Henshall, guitarist Matthew Marshall, and vocalist Ross Jennings. While Henshall, Marshall, and Jennings first had the idea of forming Haken in 2004, they opted to pursue their instruments and songwriting first. Upon recruiting other members three years later, they eventually released the demo Enter the 5th Dimension in 2008, signing with Sensory Records and releasing their first album, Aquarius, in 2010. As of 2026, they have released seven studio albums, two EPs, and two live albums.