CJ 09 September Tessa
“It felt so real, so utterly real—”

This article depicts a subject within the The Mortal Instruments: City of Bones, and as such, it either does not play a role within or differs largely from the established continuity and canon of the books of The Shadowhunter Chronicles.

Cob Bach

Johann Sebastian Bach was a German composer and musician, as well as the Shadowhunter who discovered that demons reacted to music, particularly certain frequencies created when two tones cross. He formulated a system using a mathematical progression of tonal combinations that exposes demons. Thus, he composed music that would drive demons crazy though would need to be played with a simple representation of notes, with little to no interpretation or emotion.


  • Bach was never mentioned in the series and was only included in the film by the director, Harald Zwart, who played the Bach pieces and put him in as an homage to his father, a Bach enthusiast.[1][2]


Community content is available under CC-BY-SA unless otherwise noted.