Nil Per Os is a female fronted, sludge metal four-piece based out of Metro Atlanta. Formed in 2022, the band began writing a range of songs from aggressive, psychedelic, and raw groove metal anthems to soft, intimate ballads. Drawing inspiration from Acid Bath, Alice in Chains, and Pantera, NPO channels a similar energy and presence on stage, since their debut show in 2023. With lyrical undertones of death, sacrilege, and mythology, and two studio singles already released, they are set to unveil their debut album in 2026.