Dark Sarah is a Symphonic Metal/Gothic Metal band from Kerava, Finland. It was formed by lyric soprano Heidi Parviainen in 2012 after leaving her former band Amberian Dawn.
Parviainen wrote a song called "Save Me" about a woman named Sarah who is left at the altar by her fiance, which turned into a crowdfunded Concept Album about Sarah's dark side, Behind the Black Veil, released in 2015. This was followed by two more albums continuing the story, The Puzzle and The Golden Moth.
The song example is "Dance With The Dragon".