Book 1: The Voice and The Hammer (PJO fanfic)

Book One.
The Elements Trilogy

Always in the shadow of her twin sister, sixteen year old Finn is brought to Camp Half Blood by her new friends, Jason Grace, Piper McLean and Leo Valdez.
Upon her arrival, she discovers her new skills, powers and of course... Leo Valdez

Her voice entrances those around her,
The music she plays draws him closer
and her beauty is the light in his world.

Will Finn learn to control her powers and emotions?
Or will she destroy the one she loves...

*I do not own any of Rick Riordans characters (duh)*