Bach’s Toccata and Fugue in D Minor for organ is one of the composer’s best-known works. It’s spooky, the theme for countless scary movies. “Turns out Halloween’s soundtrack also has been cloaking its true form: The Toccata and Fugue probably was not written by Bach and almost certainly wasn’t written for the organ. In music circles, that assertion is as scary as it gets. It’s not every day such a famous work gets shaken to its foundations. However, scholarly consensus is building that the baroque master did not write his most well-known organ work.”