Rochester, New York progressive metal project. The chemical-sounding name suggests synthetic complexity from Western New York.

San Diego death metal and progressive project named after the character from Dan Simmons' Hyperion saga. Sci-fi-influenced extremity from Southern California.

Aenimus was a technical death metal and deathcore band from Santa Rosa, California, formed in 2010. They released their debut Transcend Reality in 2013 independently, followed by Dreamcatcher in 2019 on Nuclear Blast Records, which displayed a more progressive and melodic dimension alongside their technical death metal core. The band dissolved in 2024, having earned comparisons to Whitechapel and Veil of Maya during their run.

Aeon Nova is a progressive metal project from Austin, Texas, still in its early stages of development.

Ocala, Florida progressive metal project channeling epic ambition from Central Florida's horse country.

Aerial View is a progressive metal band from Sacramento, California. With two EPs and a single released between 2014 and 2017, the band crafts technically accomplished progressive metal that draws from both the djent movement and classic prog influences.

Aeronwen is a symphonic progressive metal band from San Diego, California. Their 2023 debut full-length "Fallen in Ruin" combines orchestral grandeur with progressive metal complexity across eight tracks, a polished entry into the Southern California metal scene.

Los Angeles groove metal and progressive project. The Latin name — meaning 'heat' or 'tide' — channels LA's dual nature of sunshine and ocean.

Augusta, Maine progressive metal project. Fallen from the upper atmosphere into the Pine Tree State's capital.