It doesn't often come up in discussions of rock's greatest years, but this '70s year saw defining statements from Led Zeppelin, Pink Floyd, Neil Young, Joni Mitchell and more ...

These four bands helped define hard rock in the 70s. But these songs showed that they could slow it down quite well.

While boasting a litany of lauded albums during the metal pioneers' heyday, Black Sabbath guitarist Tony Iommi was always ...