Arrival of Autumn is a Canadian melodic metalcore group based out of the wilds of Grande Prairie, Alberta. AOA developed a solid regional fan base before independently issuing their hard-hitting debut album, Shadows, in 2014. The more detailed Harbinger appeared in 2019 and caught the attention of Nuclear Blast, which added the group to its roster and introduced them to producer Mark Lewis (Black Dahlia Murder, Whitechapel), who helped shape their third effort, 2023's cathartic Kingdom Undone.