Ars Moriendi is a Brazilian raw black metal project formed in 2018, operating within the underground tradition of lo-fi, abrasive black metal with themes centered on death and darkness. With minimal production and a stripped-back approach typical of the raw black metal ethos, the band channels the primitive intensity that has defined the Brazilian extreme metal underground.

Ars Notoria is a black metal band from Curitiba, Paraná, formed in 2017, with lyrical themes rooted in evil, darkness, and occultism. The band has released material through Mountain Distro/Prod. and draws on the cold, ritualistic atmosphere characteristic of the South Brazilian black metal underground.

Ars Tenebrae is a death/black metal band from Pouso Alegre, Minas Gerais, formed in 2019, playing anti-Christian extreme metal rooted in Satanic and misanthropic themes. The band operates as an independent underground act, combining the ferocity of Brazilian death metal with the cold savagery of black metal in the tradition of Minas Gerais extreme music.

Arsenal was a thrash metal band from Itajaí, Santa Catarina, active from 2011 until their split. Based in one of Santa Catarina's coastal cities, they contributed to the state's underground thrash scene before disbanding.

Arsênio is a thrash metal band from Foz do Iguaçu, Paraná, formed in 2012 in the tri-border city where Brazil meets Argentina and Paraguay. The band carries the aggressive, old-school thrash tradition of the Brazilian underground.

Art of Khaos was a progressive power metal band from Brasília, Distrito Federal, active until around 2020. Their 2018 album Monster Inside drew comparisons to Symphony X and Lamb of God, blending technical guitar work and heavy riffing with the melodic songwriting of progressive power metal.

Art of Torture is a brutal death/grind band from João Pessoa, Paraíba, playing gore-laden extreme metal in the vein of the Brazilian brutal death underground. Their 2015 album Impulse to Mutilation, recorded across studios in João Pessoa with David Nunes on vocals and André Toledo on guitars, delivers relentless blasting brutality across eleven tracks.

Arte Grotesca is a death metal band from Rio de Janeiro formed in early 2024, delivering a brutal and visceral sound with lyrics exploring grotesque and tragic human themes. Their debut album The Grotesque Gift of Human Games marks their entry into Rio's extreme metal scene with a dark and uncompromising approach.

Artes Negras is a black/thrash metal band from Buenos Aires, Argentina whose lyrical themes revolve around paganism, death, and Argentine werewolf folklore (the Lobizón). Their debut album "Let There Be Death" was released on CD in 2004 and featured members performing under pseudonyms including Necromandus on vocals, Lordnatt and Nan Noctambulus on guitars, Hellbastard on bass, and Funeris on drums.