This would be my first ever attempt at urban fantasy, so I could really use some help with fleshing this concept out. This is just a bare-bones concept based off of a character design I very recently had pop into my mind. The Concept: A young man, alone in his forest home, discovers a siren. In this concept, sirens aren't the beautiful water-nymphs that lure men in with their irresistible songs. Here, a siren is almost best-described as a witch of some sort. These "witches" have control over the slender waves on which sounds exist. Through a variety of "skills" or "spells" they can manipulate sounds and the hosts in which sounds live. These spells are: Cadence (the basic manipulation of a sound and it's host - high energy use, very heavily based on the concept of 'if a tree falls in the forest and no one's there to hear it, does it even make a sound', but reversed. 'If there's no sound when a raindrop splashes, does it really fall at all?'), Echo (the process of taking the energy of sound and transforming it into a physical force), and Dissonance (the process of replacing a sound's host). When male main character turns around in his home to find a young girl standing there, a cry of surprise rises in his throat. Then never releases. The girl offers him a coy smile with an inquisitive tip of her head. I'm not really sure what I wish to DO with these sirens, particularly the siren our main character meets. Do they have a fantastical enemy she's running from? Does she suffer amnesia, unaware of the abilities hidden inside her innocent frame? Are sirens actually just as deadly and evil as folklore would have you believe? I'll very seriously take in any critiques on the concept itself and ideas for where I could possibly take this story. Thank you all very much in advance!