rock, 70s, heavy metal, blues, british, uk, hard rock, britannique, folk rock, blues rock, américain, classic rock, album rock, arena rock, british blues, english, blues-rock, classic pop and rock, british metal, 1971, led zeppelin box set, should be public domain, rock ballad, pop/rock, regional blues, chariot, à ranger, offizielle charts, technically sillyname, discogs/the most popular album released every year from 1950 to 2020, 5+ wochen