Nightingale maybe drowns Roman siren? (5)

I believe the answer is:

loren

I'm a little stuck... Click here to teach me more about this clue!

'siren?' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I can't see?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for loren that I've seen before include "Sofia, Italian film actress" , "Sophia - - (film star)" , "Sophia --, Italian film actress" , "Sophia, actor" , "Sophia -, Ital. actress" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.