Akaamelda is a one-man melodic death metal project from Buenos Aires, created by Alexey Ermakov, that draws on the classic Scandinavian style of the genre. The debut album Death Equals Relief was released in November 2024, followed by the expanded Epitaph Edition in March 2025, featuring thirteen tracks built around melodic guitar harmonies, heavy riffs, and themes of grief and despair. The project blends melancholic atmosphere with the high-energy drive of early 1990s melodic death metal.

Akallabêth was a folk metal band from Aracaju, Sergipe, whose very name comes from J.R.R. Tolkien's account of the downfall of Númenor — a fitting tribute for a band weaving fantasy-literary themes into their heavy sound. Active in the 2010s before splitting up, they were one of the few extreme metal acts to emerge from Sergipe's underground scene.

Akeronte is a thrash metal band from Haedo, in the Buenos Aires metropolitan area, built around the aggressive, riff-forward sound of classic Bay Area and South American thrash. The band released two EPs early in their career — Mientras los Reyes Ríen in 2009 and Epidemia in 2010 — establishing their place in Argentina's underground thrash scene. The current lineup features Diego Atienza on vocals and guitar, Julian Cortina on guitar, Leandro Lebenas on bass, and Lucas Flores on drums.

Akinetopsia is a brutal death metal trio from São Paulo formed in 2022, consisting of Evandro Miranda (vocals/guitar), Juan Azevedo (bass/vocals), and Daniel Oliveira (drums). Signed to New Standard Elite, their debut full-length "Collapse of Continuum" (2022) drew attention in the international brutal death metal underground for its dense riffing and technical precision, with themes centered on mental illness and alienation.

Akraniuum is a Brazilian death metal and grindcore band active since 1992, making them one of the longer-running acts in Brazil's extreme underground. Their three-decade career places them in the same generational wave as the country's foundational extreme metal groups, combining the blasting brutality of grindcore with the riff structures of death metal.

Akuã is a black metal project from São Paulo formed in 2018, whose name draws from indigenous Brazilian cultural and linguistic heritage — aligning them with a wave of Brazilian acts that channel native spiritual and pagan themes through the black metal form. Operating in the underground since their formation, they are part of São Paulo's diverse and sprawling extreme metal scene.

Alaic is a one-man depressive black metal and ambient project from Vitória da Conquista, Bahia, run solely by the musician known as Putrefactus, who handles all instruments, mixing, and mastering. Active since 2016, the project has produced a substantial catalog including the albums "The Harvest," "Final Embers of Sunlight," and "Overcoming the Existence," as well as split work, exploring themes of despair and inner dissolution characteristic of the Brazilian DSBM scene.

Alakran is a Buenos Aires heavy metal and hard rock band with roots going back to 1982, making them one of Argentina's longest-running acts in the genre. Founded by guitarist Gady Pampillón and vocalist Mario Curcio, the band released albums including Vagabundear and Otra vez en las calles (1991), and has since continued under vocalist Mario Ian through multiple reunion periods. They were part of the wave of Argentine hard rock acts — alongside Kamikaze and Rata Blanca — that defined the sound of the country's metal scene in the late 1980s.

Alaridos are a grindcore band from Santiago, Chile, formed in 2013, with a lineup featuring Daniela on vocals, Erik on drums, Alberto on bass, and Alejandro on guitar. The band has released four recordings: the debut full-length Ciudad Paranoia (2013), Vida Sangre y Dolor (2014), a split with Richard Harrison (2017), and Horca (2021), which was tracked at Lion's Roar Studio in Peñaflor and mixed by Cristian León. Their Bandcamp presence under the tag "Grindcore y Muerte" reflects the band's dual grindcore and death metal influence.