Seinfeld26 wrote:
In all seriousness, I would say Black Sabbath ultimately pioneered metal. However, in addition to what Ganesha pointed out about Sabbath's music being a logical progression of bands like Steppenwolf and Iron Butterfly, I would also like to mention that the heavy metal genre probably wasn't fully evolved until Metallica released Kill'em All in 1983 (or at least until Iron Maiden released Number Of The Beast a year prior). Until then, the line between heavy metal and hard rock was a lot thinner. In fact, many of the bands we now call "classic rock", such as Ted Nugent and Aerosmith, were considered "heavy metal" in the 70's and very early 80's. And even a lot of the bands we still associate with metal, such as Judas Priest, Motorhead and Ozzy Osbourne, had more of a classic rock sound. Iron Maiden and especially Metallica were probably the two bands that truly established the dividing line between hard rock and heavy metal.
Wrong. Aerosmith, Nugent, etc. were NEVER NEVER NEVER considered as heavy metal by anybody in the 70s. WTF?
Venom predates Metallica... Mercyful Fate, Tygers of Pantang, Tank, Satan, Angel Witch, Diamond Head, Saxon, all Judas Priest (listen to stained Clas, Unleashed In The east, British Steel or Screaming For Vengeance and still try to tell me that is not pure metal), Pagan Altar, Riot, Raven, Accept... ye gods, I could go on.
those bands and others defined metal long before Metallica came along.
I get the impression that you don't really know too much about metal outside of the "big four" bands, no offense, just an observation.