Andurá is a black metal band from Campos dos Goytacazes, Rio de Janeiro state, Brazil, formed in 2020. The band adds to the growing cluster of Rio de Janeiro state underground black metal acts, pursuing the harsh, atmospheric extremity that characterizes the Brazilian black metal underground.

Anencefalo were a crossover thrash band from Santiago, Chile, active across several periods between 2004 and 2023, who evolved from punk-inflected death metal into a harder-edged thrash and crossover style. Their discography includes the albums "Odio" (2009) and "Cefalotripsia" (2011), with lyrics addressing mental illness, death, and depersonalization throughout their career.

Anestesic is a thrash metal band from Santo Antônio de Posse, São Paulo state, Brazil, formed in 2008. Part of the continuing wave of interior São Paulo thrash acts, the band carries the aggressive, riff-driven sound rooted in the old-school Brazilian thrash tradition.

Anestesya was a thrash metal band from Garibaldi, Rio Grande do Sul, Brazil, formed in 2004 and named as a tribute to Metallica bassist Cliff Burton, directly referencing the instrumental "Anesthesia (Pulling Teeth)" from "Kill 'Em All." Blending 1980s thrash aggression with progressive and classical influences — a sound they called "Thrash/Heavy Progressive" — the band released the debut album "Cruel Fear" before eventually dissolving.

Anesthesia of Beer is a crossover thrash band from Campos dos Goytacazes, Rio de Janeiro, blending punk, hardcore, and extreme metal in the tradition of Brazilian crossover acts. Their discography includes the demo "Reign in Beer" (2009), the EP "The Lightning Broke My Bottle" (2012), the full-length "Altars of Drunkenness" (2017), and "My Terror Tapes" (2019), with lyrics spanning horror-film homage, beer-soaked party anthems, and sharp antifascist social criticism.

Aneurose is a thrash metal band from Lavras, Minas Gerais, whose sound pulls from classic thrash while incorporating death metal and hardcore elements. They released the full-lengths "From Hell" (2013) and "Juggernaut" (2016), as well as "Made in Rage", and have appeared on international tribute compilations covering AC/DC, Black Sabbath, and Sepultura, reflecting their standing in the Brazilian underground.

Angant is a heavy metal quartet from São Bernardo do Campo, São Paulo, playing a classic-influenced style drawing on Judas Priest, Accept, and early Metallica. Their 2018 debut EP "Deep and Far" — released through Tratore — showcases tight riffing, melodic choruses, and well-balanced production across four tracks, marking a confident start for the band.

Angel Distress is an atmospheric doom/death metal band from Belo Horizonte, Minas Gerais, crafting music described as dark, heavy, and majestic with an epic and melancholic character. The band released their debut album "Ligna In Inani" in 2025 through Vision of God Records, having built anticipation with the earlier single "Fallen in Pain".

Angel of Light was a black metal band from Piracicaba, São Paulo, active from 1995 to 2003, rooted in the Luciferian and Satanic tradition of Brazilian black metal. The band appeared on the 1999 split "Gloria Patri" alongside fellow Brazilian act Satanaquia, released through MegaTherion.