King Crimson

Among the largest progressive (and not only) groups of all time. Just consider "In The Court Of the Crimson King" (1969), a romantic and baroque masterpiece (as well as a precursor to a genre), "Islands" (1971), a perfect blend of symphonic rock and neoclassical hints, "Larks' Tongues In Aspic" (1973), a splendid minimalist fresco, "Red" (1974), a frantic and cold precursor to progressive metal, still light years ahead, and "Discipline" (1981), a paranoid and dark New Wave landmark. I bow down.