Aggrotech (also known as hellektro,[1]) is a derivative form of electro-industrial with a strong influence from the hardstyle/hardtrance music (straight Techno bassdrum and 3xOsc sounds, especially SuperSaw leads from Roland JP-8000) that first surfaced in the mid-/late-1990s. Aggrotech regularly consists of harsh song structures, aggressive beats, and explicit, pessimistic, often militant lyrics. Typically the vocals are distorted and pitch-shifted to sound harsh, and synthetic. Aggrotech musicians include Aesthetic Perfection, Agonoize, Alien Vampires, Amduscia, C-Drone-Defect, Cenobita, Combichrist, Dawn of Ashes, Detroit Diesel, Dulce Liquido, DYM, Feindflug, Flesh Field, Funker Vogt, God Module, Grendel, Hocico, Nachtmahr, Panic Lift, Psyborg Corp, Psyclon Nine, Reaper, Suicide Commando, Tactical Sekt, Tamtrum, Terrolokaust, The Retrosic, Unter Null, Virtual Embrace, Wings That Bliss and X-Fusion, among many.