There are multiple mermaids that appear throughout the side-stories of Lost Alice. Therefore, multiple actors may be casted! However, there are also some sirens who pretend to be mermaids, so some singing or humming will be required. Actors casted as mermaids will most likely also be playing sirens, so two voices may be required.

Mermaid Voices: Up to interpretation. Possibly high to mid-deep pitched range, smooth, soothing, or elegant. I would imagine that as mermaids, their voices would be something pleasant to hear.

Siren voices: When using their natural voices, they should not be soothing or pleasant. I imagine something more raspy and hungry, as they like to lure their prey

Accents are welcome!