Mar Muerto is an experimental metal band from Antofagasta, Chile, formed in 2017. Rooted in heavy metal, the band incorporates experimental touches spanning classical music, progressive structures, and black metal influences. Their 2020 EP Shub-Niggurath, a seven-track release drawing on Lovecraftian themes, stands as their primary recorded output to date.

Marcelo Yakko is an Argentine bassist and composer from Villa Gesell whose output spans more than 15 instrumental albums blending progressive metal, jazz fusion, and Latin influences. His 2018 album Nevada Mortal is a progressive metal concept record inspired by the classic Argentine sci-fi comic El Eternauta, and his 2024 release Yakkosonics features a roster of international collaborators including guitarist Alex Suarez and drummers Nicolas Fernandez Mac Loughlin and Martin Zamorano.

Marco Melo is a progressive metal and shred guitarist from Pernambuco whose catalog blends intricate lead work with collaborative experimentation. His debut EP End of Days (2016) established his direction, and subsequent releases like Transcendent (with Hugo Rioli and Doug Brito) and Drained (with Filipe Soares) showcase a penchant for guest-driven compositions that push the boundaries of technical metal guitar.

Melencolia I is a one-man project by guitarist and multi-instrumentalist João P. Amorim Xavier, weaving together atmospheric black metal, doom, shoegaze, and progressive metal into a dense philosophical framework that the artist describes as exploring the depths of human existence through poetic themes. The project released the EP "Introspective Violence" in early 2026, following the earlier full-length "Hermitage."

Mindcrafter plays a brand of progressive metal anchored in the Dream Theater tradition but laced with dissonant passages and Brazilian rhythmic elements that give the music a distinctive regional texture. Their debut full-length "Signs Revealed" (2015), recorded at HR Studio in Rio de Janeiro and mixed by Daniel Escobar, weaves a three-character conceptual narrative through alternating time signatures and dynamic vocal performances.

One of Brazil's most internationally active progressive metal acts, Mindflow built their reputation on the powerful tenor voice of Benilo Herbert and a polished, hook-driven sound across albums including "Mind Over Body" (2006) and "Destructive Device" (2008), the latter produced by Ben Grosse in Los Angeles. The band toured Europe, Asia, and North America and released their fourth record "365" in 2011 before continuing as an active outfit.

Mindpath is the solo project of Viña del Mar musician Iván Stevens, blending blackened death metal with progressive and acoustic elements. The project has released a series of albums including Psychosis, and the Silence that Prevails (2012), the EP Versos Nostálgicos de un Individuo Cualquiera (2013), From Where the Highest Mountain Came (2013), and A la tierna indiferencia del mundo (2015), all made available as free digital downloads under Creative Commons licensing.

Molitium is a heavy and progressive metal band from Santa Catarina whose 2018 debut album "Progeny" laid out a sound rooted in melodic guitar work and dynamic song structures. The record featured guest appearances from Marcelo Braga across multiple tracks, giving it a collaborative texture uncommon for a debut release.

Moriquëndi was a power/progressive metal band from Mendoza founded in 1998 by Roly E. Testini (1975–2008), whose songwriting drew from J.R.R. Tolkien's mythology and his own original fantasy stories. The band's debut demo El Último Elfo Oscuro was recorded in January 2001 at Estudios ADN with Aníbal Rivero and Diego Rubio, and the lineup included drummers Marcelo Narváez, guitarists Javier Vildoza and Sebastián Narváez, bassist Gabriel Narváez, and keyboardist Nicolás Sánchez.