Mirthless is a progressive metalcore/deathcore band that showcases its virtuosity through diverse and progressive instrumentation. With an emphasized focus on dark, dissonant, and depressing atmospheres, Mirthless also leaves room for melodic breaks of uplifting guitar harmonies as well as brutal, fast paced breakdowns. With its technical drums and guitars and versatile unclean vocals, Mirthless is an aggressive, malevolent, and even melodic band that continuously challenges and perfects their own sound as well as the conventions of modern metal.