"Sirin was designed to control and manipulate the flow of battle by afflicting her foes with terrible sicknesses of the mind and body. Sirin’s power as an Archon grants her the unique ability to influence others with song (Those who played Pillars of Eternity’s Chanter class will be familiar with her mechanics). In combat, she will passively sing, causing minor blights and hindrances to foes that hear her voice, as well as subtle benefits to her allies."
Is she voiced by Rebecca Black?