It's funny. The older I get the more I realize how seminal Black Sabbath were. I remember discovering "heaven and hell', and loving Dio's voice. Then later realizing it was the 1st few albums that now are credited for spawning an entire sub genres of metal. Back to that top 20 list- I think Master of Reality is one of the most important albums in the history of heavy music. If you haven't heard that album-please give it at least one listen!
Oh, yeah-Van Halen were OK too-hee, hee Really, wouldn't you have to give Van Halen some credit for the plethora of tech-fill in the blank-any sub genre you like?
Sorry couldn't resist this. Maybe some of you think it's grandpa metal, but here is what All musci guide writes of Masters of Reality:
The shortest album of Black Sabbath's glory years, Master of Reality is also their most sonically influential work. Here Tony Iommi began to experiment with tuning his guitar down three half-steps to C#, producing a sound that was darker, deeper, and sludgier than anything they'd yet committed to record. (This trick was still being copied 25 years later by every metal band looking to push the limits of heaviness, from trendy nu-metallers to Swedish deathsters.) Much more than that, Master of Reality essentially created multiple metal subgenres all by itself, laying the sonic foundations for doom, stoner and sludge metal, all in the space of just over half an hour. Classic opener "Sweet Leaf" certainly ranks as a defining stoner metal song, making its drug references far more overt (and adoring) than the preceding album's "Fairies Wear Boots." The album's other signature song, "Children of the Grave," is driven by a galloping rhythm that would later pop up on a slew of Iron Maiden tunes, among many others. Aside from "Sweet Leaf," much of Master of Reality finds the band displaying a stronger moral sense, in part an attempt to counteract the growing perception that they were Satanists. "Children of the Grave" posits a stark choice between love and nuclear annihilation, while "After Forever" philosophizes about death and the afterlife in an openly religious (but, of course, superficially morbid) fashion that offered a blueprint for the career of Christian doom band Trouble. And although the alternately sinister and jaunty "Lord of This World" is sung from Satan's point of view, he clearly doesn't think much of his own followers (and neither, by extension, does the band).
Black Freaking Sabbath!!~!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!