Board Thread:Spoilers!/@comment-4877635-20130614170253/@comment-22525977-20131004043610

It depends on whether they mean siren song as a metaphorical "she has a pretty voice and he likes her voice because he has a thing about voices" kind of thing or siren song as literally "her voice has a compulsion effect that seduces men supernaturally" — both are valid explanations. I was talking about the latter specifically, where Eric is magically forced to be infatuated with Ariel/obsessed with her voice; the former is a perfectly normal reason to have an initial attraction to somebody.