I usually hate those posts which say “I’m obsessed with…”, but, this is a metal song I’m obsessed with, especially this live version
For those not familiar with Epica, they are primarily a Symphonic Metal band. But, they weave in lots of different types of metal. Take this song: it has such a positive view, eh? The gorgeous ladies wearing dresses, their lovely voices, smiling. Performed in B minor, giving it a brighter feel. The chorus, the orchestra. But, wait, it’s actually based on the old, old little mermaid fairy tale, and, remember, the originals tended to be pretty dark. In this case, the sirens/mermaids are telling their sweet sister to take the dagger and kill the prince, and maybe some others, per the chorus
Will you take this dagger from me, Sweet sister
Don’t linger…
If she doesn’t take the dagger the sirens may kill her. The 2nd stanza right before the chorus
Little sister
The sun is sleeping
Come with me before
Crimson fills the air
Every creature below
Is weeping for your fate
So take my hand now
They’ll possibly kill her if she doesn’t return to the sea. Third stanza
See this knife, it is sharp
Plunge it into his heart
Send his soul to the heavens
Far above the stars….
Rather dark, eh? Mixed in some black metal.

Most excellent!!