Addam's Nightmare is a progressive and melodic metal band from Buenos Aires, Argentina, founded in 2014 by guitarist Reaper O'Brian, later joined by Fear Monta on bass and Nico Granatera on drums. The band released their debut EP "Halloween For All" in November 2014, a four-track release that established their blend of progressive arrangements with melodic heaviness. What began as a conceptual side project quickly solidified into a fully active band within the Buenos Aires underground scene.

Heavy and progressive metal band from Arujá, São Paulo, formed in 2022 and short-lived before splitting up. They drew on themes of war, death, and apocalyptic earth devastation, situated within the melodic and progressive metal tradition of the greater São Paulo region.

Alexandre Rocha is a solo progressive metal project from Bauru, São Paulo state, Brazil, launched in 2021 after Rocha spent years composing and playing in local metal bands. His debut album "Viewpoints" (2021) was fully performed, produced, and recorded by Rocha at Mister Rec Vintage Studios in Bauru, featuring seven tracks of technically oriented progressive metal with a strong emphasis on composition and dynamics. The project reflects a one-man approach to the genre that prioritizes melodic depth alongside technical proficiency.

Allmadda is a progressive thrash metal act from Rio de Janeiro whose debut album 'Majestic Sound of the Storm' (2015) weaves macabre keyboard textures through nine densely constructed tracks, some exceeding nine minutes, drawing on both progressive structure and thrash aggression in equal measure.

Anaxes is a progressive metal band from Caxias do Sul, Rio Grande do Sul, Brazil, originally formed in 2005 by guitarist Bruno Pinheiro Machado and drummer Thiago Caurio as an instrumental project before expanding into a full band with vocalists. Their debut album "Antithesis" (2010) drew comparisons to Symphony X, blending intricate guitar work with melodic, keyboard-accented arrangements, and the band has continued to develop within the South Brazilian prog-metal scene.

Andragonia is a progressive metal band from São Paulo, Brazil, formed in 2007, whose debut album "Secrets in the Mirror" (2010) was elected Best Brazilian Progressive Metal Album of that year and featured a video aired on Brazilian MTV. The band blends complex song structures and powerful guitar work across three studio albums — "Secrets in the Mirror" (2010), "Memories" (2012), and "Oxygen" (2016) — placing them among the more prominent acts in Brazil's progressive metal scene.

Ansata was a progressive metal band from Piracicaba, São Paulo, whose name is the Latin word for the ankh symbol. The band released their debut album "Crux Ansata" in 2008, a concept record steeped in ancient Egyptian mythology and middle-eastern musical influences, woven through technical guitar work and prominent keyboards. The lineup included vocalist Malagueta, guitarist Rafael Romani, keyboardist Thomas Barcelos, and drummer Thiago Siqueira.

Aquila is a progressive metal band from São Paulo, Brazil, formed in 2009 and active in the city's independent metal scene. Operating without major label backing, they pursue the technically demanding side of progressive metal with a focus on composed, layered arrangements. The band remains active as an independent act within São Paulo's diverse heavy metal community.

Arcane Sanctuary is a symphonic progressive metal band from Rosario, Argentina, built around guitarist and bandleader Francisco Romero alongside vocalist Juliana Penacino, bassist Luciano Vittone, and drummer Jeremías Scoccimarro. The band released their debut full-length album "The Traveler's Diary" in August 2025, a nine-track record described as a journey through human emotions, time, life, and death. Their music fuses the complexity of progressive metal with orchestral and symphonic arrangements, making them one of Argentina's emerging acts in the genre.