“Musicians don’t agree on much, but they tend to concur that the note A in the middle of the treble staff should be tuned to 440 Hz. The International Standards Organization even issued guidelines to this effect back in the ’50s. But the conspiracy theorists will tell you that this pernicious tuning was promoted by the Nazis—Joseph Goebbels, chief propagandist for the Third Reich, imposed the 440 Hz tuning as part of a heinous plan to warp the consciousness of the masses.”