You're trying to use the argument that a sound cannot cause detriment. Thats fine, but the OP wasn't implying that any music could actually cause physical or mental harm to anyone. He was I think implying that music can conjure up a sense or feeling of evil or malice that shows through in the sound produced by eliciting such emotional response, as does all good music.

So perhaps it was slightly incorrectly worded in that the sentence itself does mean what you are saying.

However if we're not splitting grammatical hairs, its plainly obvious to anyone that he is implying the latter possibility.

In that case I think the most evil sounding band in metal is Blind Guardian...sometimes.

They're influenced by JRR Tolkein, how evil could they be lol?

Well sitting through 3 hours plus of overblown and notably innacurate film, directed by a man intent on remaking the neverending story, is pretty damn evil by my standards.