[{"n": "After the Burial", "u": "/e/american-progressive-metal-musical-groups/after-the-burial/", "s": "American progressive metalcore pioneers from Minneapolis."}, {"n": "Aghora (band)", "u": "/e/american-progressive-metal-musical-groups/aghora-band/", "s": "Progressive metal band formed by guitarist Santiago Dobles in 1995."}, {"n": "Anacrusis (band)", "u": "/e/american-progressive-metal-musical-groups/anacrusis-band/", "s": "American progressive/thrash metal pioneers from St. Louis"}, {"n": "Animals as Leaders", "u": "/e/american-progressive-metal-musical-groups/animals-as-leaders/", "s": "Instrumental progressive metal band from Washington D.C."}, {"n": "Arch Echo", "u": "/e/american-progressive-metal-musical-groups/arch-echo/", "s": "American instrumental progressive metal band from Nashville."}, {"n": "Arch/Matheos", "u": "/e/american-progressive-metal-musical-groups/arch-matheos/", "s": "American progressive metal project by Fates Warning founders."}, {"n": "Artension", "u": "/e/american-progressive-metal-musical-groups/artension/", "s": "North American neoclassical progressive metal band formed in 1993."}, {"n": "Artificial Language", "u": "/e/american-progressive-metal-musical-groups/artificial-language/", "s": "American progressive metal band from Fresno, California."}, {"n": "At War with Self", "u": "/e/american-progressive-metal-musical-groups/at-war-with-self/", "s": "A progressive project changing lineup and style with each album."}, {"n": "Atheist (band)", "u": "/e/american-progressive-metal-musical-groups/atheist-band/", "s": "Pioneers of technical death metal from Florida."}, {"n": "Behold... The Arctopus", "u": "/e/american-progressive-metal-musical-groups/behold-the-arctopus/", "s": "American instrumental metal band from Brooklyn, formed 2001."}, {"n": "Believer (band)", "u": "/e/american-progressive-metal-musical-groups/believer-band/", "s": "American technical thrash metal band known for symphonic elements."}]