Mastodon with Dead Heat and All Shall Perish

Atlanta's Mastodon, formed in 1999, are influential in American metal, blending genres like stoner, sludge, and metalcore. Known for complex riffs and conceptual albums like Leviathan, they've received Grammy recognition for hits like "Sultan's Curse." Albums like The Hunter and Emperor of Sand showcase their diverse influences. They often collaborate with Neurosis' Scott Kelly and teamed up with Lamb of God in 2024 for "Floods of Triton."

Bay Area deathcore pioneers All Shall Perish, praised by Kirk Hammett, toured with In Flames, feature Eddie Hermida (also of Suicide Silence) and founding member Matt Kuykendall.