JJax is the solo project of Julien Jacquemond from Chambery, France, a veteran of several metal bands including Inner Visions, Further Dimension, and Dead Season. His solo work channels his decades of experience as a vocalist, composer, and multi-instrumentalist into original metal compositions with strong melodic hooks.

Joda Cema is a death/groove/thrash metal band from Bournemouth, UK, who have been taking the bullshit out of metal since 2004. Their humorously titled album David Hasselhoff's Top 50 Power Ballads (2016) belies the serious heaviness of their death and thrash metal compositions.

Joe La Mouk is a one-man punk and metalcore project from Beausoleil, France, active since 2007 and self-described as a musical outlet where the only rules are nonsense and humor. Their releases including Au Top Du Stress (2023) blend punk, garage, metal, and hardcore with absurdist lyrics about topics ranging from pizza ovens to French astronaut Thomas Pesquet.

Joe Mizzi is a Maltese-born singer who relocated to Germany in 1987 and joined the band High n Dry in Cologne, opening for Iron Maiden, The Cross, and performing at the Loreley Festival alongside Meatloaf, Magnum, and Marillion. His solo album Angels Fall (2011) showcases his powerful vocal range honed through decades in the European hard rock and metal scene.

Johann Wolfgang Pozoj is an experimental metal project from Zagreb, Croatia, whose name playfully references Johann Wolfgang von Goethe. Their albums Birth of Pozoj and Escape of Pozoj explore avant-garde territory within the Croatian underground metal scene.

Johansson refers to Rogga Johansson, Sweden's prolific death metal mastermind who leads multiple projects including Paganizer, Revolting, The Grotesquery, and Necrogod. His solo album Entrance to the Otherwhere (2019) on Transcending Obscurity Records was called his magnum opus by Decibel Magazine and earned a 10/10 from Metal Talk, featuring artwork by acclaimed painter Mariusz Lewandowski.

John B. is a Greek metal musician whose heavy compositions draw on the diverse traditions of the Hellenic metal scene. His work contributes to the vibrant Greek underground with intense, atmospheric metal.

John D. Prasec is a singer, composer, and songwriter born in Trieste, Italy, now based in London, creating hard rock and heavy metal. His work supports what he calls the real voice of hard n heavy, channeling his Italian-British background into passionate, powerful vocal performances.

John Doe is a heavy metal band from Poland that creates aggressive, anonymity-themed heavy compositions. Their work channels the spirit of the Polish underground metal scene through hard-hitting riffs and intense performances.