Pacific Northwest trio Sumac includes members of post-metal heavyweights such as Isis and Russian Circles. The group's intense, complex sound falls somewhere between sludge metal and experimental noise rock, and their mammoth, punishing compositions include numerous time changes as well as occasional ambient interludes. Lyrically, the band examines subjects such as struggles with anxiety (on 2016's What One Becomes) and the spiritual aspects of love (on 2018's Love in Shadow). Sumac frequently collaborates with Japanese noise guitarist Keiji Haino, as on releases like 2022's I...