An antiquarian discovers the “masters’ voice” effect, apparently deliberately programmed into vectors: analog recordings of humans singing are strangely hypnotic.

Editor’s note: This probably establishes the date for establishing the Aeon “museum” on Venus, since that’s an antiquarian group tied to the master’s voice by the “Aeon” Contract. It’s a loose connection but would make sense as a narrative.

Reference: Silent war, and original writeup of Master’s Voice phenomenon HSD 1.0?

Date Notes: 400 years before present day