There are plenty of acts that appeal to metalheads without being truly metal, but could be easily lumped in with heavier or more extreme bands. Most everyone is aware that Soundgarden and Alice In Chains veer their grunge closer to the heavy realm, while the technical ability of progressive rockers like Rush and King Crimson could impress even the most stoic of heshers. Goth rock is also an obvious sibling in the shadows, as is its close cousin post-punk. Meanwhile, punk itself is about as close as one can get, especially as it gets more and more hardcore. Metal pre-cursors such as Led Zeppelin and Deep Purple have metal's earliest DNA in their sounds, while noise rock shares the aggression inherent in making harsh, dramatic music.
That said, there are a handful of artists who, whether due to their technical ability, dark lyrical themes, or proximity to extreme music, the majority of metal fans will give a pass, and occasionally even get firmly behind. Here are 10 bands or musicians who metalheads nod in appreciation of across genre lines...