Allos is a progressive power metal band from Belo Horizonte, Minas Gerais, blending the speed and harmony of power metal with sophisticated prog technique and symphonic elements. Their 2024 album 'Strong Delusion' features guest appearances from Christian Liljegren of Swedish veterans Narnia and Rob Rock of Impellitteri, and was mixed by Thomas 'Plec' Johansson, signaling the band's growing international reach.

Alltorment is a thrash metal band from Goiânia, Goiás, active since 2012 and part of the Central-West Brazilian underground metal scene. They play in the direct, aggressive tradition of Brazilian thrash with limited studio output documented publicly.

Alma Matter is a melodic black metal band from Buenos Aires Province, Argentina, with roots going back to 2010 and a renewed phase of activity from 2019 onward. The band has released two volumes of their ongoing series "The Luciferian Tales", which form the backbone of their self-released discography.

Alma Negra is a heavy and thrash metal band from Curitiba, Paraná, formed in 2017. Operating within Curitiba's well-established southern Brazilian metal scene, the band delivers a raw, riff-driven sound rooted in classic thrash and traditional heavy metal.

Alma Siniestra is a thrash metal band from Río Cuarto, in Córdoba Province, formed by guitarist and vocalist Damián González, guitarist Nicolás Ortiz, bassist Luciano Villarreal, and drummer Salvador Velázquez. The band issued the ten-track demo "Origen" in 2012 and followed it with their debut full-length "Violencia extrema", released in January 2016, drawing on influences from Kreator, Sepultura, and Pantera.

Almagor is a death metal band from Maracaibo, Zulia, Venezuela, formed in 2007, playing a brutal style that draws from both death metal and grindcore with Christian lyrical themes. The band released the EP Aborto comun in 2012 and their debut full-length Juzgados in 2014, earning recognition in Venezuela and across Latin America.

Almah was a São Paulo progressive power metal band founded in 2006 by Edu Falaschi, who had previously fronted Angra for a decade. Falaschi left Angra in 2012 to focus entirely on Almah, releasing albums including 'Motion' (2011), 'Unfold' (2013), and 'E.V.O.' (2016), and the band performed at Rock in Rio (2013) and ProgPower USA (2015) before eventually going on indefinite hiatus.

Alone Path is a one-man raw black metal project from Cabo Frio, Rio de Janeiro, formed in 2024 by a multi-instrumentalist named Felipe. The project channels lo-fi, atmospheric black metal with lyrical themes rooted in depression, luciferianism, and occult introspection.

Alone with Whores is a black metal/grindcore band from Catanduva, São Paulo, formed in 2023 and released on the local D.I.Y. imprint Podreira Records. Their self-titled 2023 EP blends the abrasive speed of grindcore with black metal rawness, representing the underground noise scene of the interior of São Paulo state.