Two days, three at the outside. That is how long the recording of Paranoid took in June 1970, split between Regent Sound and Island Studios in London, and the figure does more arguing than any adjective could: the record that the whole of heavy metal has spent more than half a century measuring itself against was never assembled, sanded and lacquered, it was tapped from the furnace in a single pour, run hot into the sand and left to set in whatever shape the metal chose. Nobody had time to cool it. Nobody needed to.
Released by Vertigo in Britain on 18 September 1970, the second album from the Birmingham quartet that had put out its first record only that February, Black Sabbath, followed the self-titled debut by seven months, kept Rodger Bain in the producer's chair and the same four men in the room, Ozzy Osbourne singing, Tony Iommi on guitar, Geezer Butler on bass and Bill Ward on drums, and climbed to number one on the UK albums chart within a month of release, before Warner Bros. brought it to America on 7 January 1971 and took it to number twelve there. The title track, cut as a single, climbed to number four. It exists because the album came up one song short. When Bain asked for another, Iommi told Louder Sound on 22 November 2023, the band wrote it on the spot: "we'd done it there and then." Then the whole schedule in a single line: "We were only in there for a couple of days, you see."
It is a record of the industrial Midlands, and it sounds like one. This was a city of drop forges thudding through the night shift, of sheet steel fed into presses and foundry smoke banked low over the Black Country, and the guitarist whose hands shaped the sound had left the tips of two fingers in a machine on a sheet metal factory floor as a teenager. Hear Paranoid as a casting from that world, eight pieces tapped from one crucible in one pour, the slag still clinging to their edges, every riff landing like a ladle of molten iron emptied straight onto the foundry floor, heavy enough to crack the concrete and hot enough to set the smoke above it glowing. Nothing here is machined. All of it is cast.
Heavy metal has been reheating this ingot for more than fifty years, and it has never once run hotter than it did coming out of the ladle.
Eight pieces from one pour
"War Pigs" opens the offensive and carries the heaviest load on the record, nearly eight minutes of an anti-war song aimed squarely at the generals and the politicians of the Vietnam years, Butler's lyric grinding the brass off their shoulders while the band beneath him hauls the whole war machine forward at a heavy, deliberate tread, as if the song itself were a column of armour rolling off a Midlands production line. The words matter here in a way they rarely did in the hard rock of 1970. This was the title the album was meant to carry, and it would have carried it well.
"Paranoid" is the opposite job done by the same crew: two minutes and fifty seconds, the shortest song with a voice on it, the afterthought that went on to give the album its name, and the proof that the weight survives when the metal is rolled out thin into a single. It is the front door of the record. It opens straight onto the furnace.
"Planet Caravan" then breaks the record's own pattern, and it is meant to. Iommi on flute, Ward on congas, engineer Tom Allom on piano, Osbourne singing low and far away: this is the quench tank, the cold bath the hot steel is plunged into so that it hardens instead of cracking. That hushed, distant voice is the whole point of the song, not its weak link. Without these four and a half minutes of stillness, the blow that comes next would land on a numbed ear.
What comes next is "Iron Man", and its riff is where the foundation stone of the genre was laid: a slow, stamping figure struck like a steam hammer on a glowing billet, one blow at a time, every note set down with the full mass of the band behind it, a riff that each generation of the steelworks since has copied and worshipped and none has ever bettered at its own game. Six minutes. Not a wasted second in them.
The second side belongs as much to the rhythm section as to the guitar. The engine room of this Birmingham works, Butler and Ward, is what turns "Electric Funeral" and the seven minutes of "Hand of Doom" from heavy songs into load-bearing structures, the bass locked flawlessly under every riff and the drumming giving all that tonnage room to move, while "Hand of Doom" turns its lyric on addiction with the same unblinking seriousness "War Pigs" turned on the war. Here, in these two songs, is the blueprint doom would spend the next half century building its temples on: slow, heavy, and staring into the dark without blinking.
The slag in the casting
Every casting carries some slag, and here it has a name: "Rat Salad". Two and a half minutes of instrumental built around a Ward drum solo, it is the one track on the record that splits the room clean in half, heard either as a drummer's feature executed without a slip or as filler, a guitar figure with nothing to say and a solo that runs on past its welcome. The second hearing is nearer the truth. The drumming is not the fault. The song around it is barely there, and on a record this lean it is the only place where the pour ran thin.
"Fairies Wear Boots" then hauls the full quartet back to the furnace for six minutes and fifteen seconds and ends the album on the whole band rather than on one member of it, which makes the drum break before it sound like what it was, an interval. The record closes the way it opened, with the arsenal at full heat.
What it costs to walk past it
This is the record for anyone who wants to hear where the weight in heavy music was first poured and first set hard, long before it became a style with a uniform, when it was still four young men out of industrial Birmingham and a producer asking for one more song. Its only fault is two and a half minutes long and alters nothing. Ignore it, and the whole genre has to be learned from its copies. Every one of them was cast from this.