Duet

RES-009 is a classical violin crafted in the late 18th century with excellent workmanship, but no luthier's inscription was found inside the instrument's belly. The object has long been placed on a 1.2-meter-tall violin stand. RES-009 is wrapped in an 18th-century-style black tailcoat that has clearly been altered and tailored. Although the fabric of this tailcoat is worn and shows multiple areas of abrasion, it always remains abnormally clean and cannot be forcibly removed. At the scroll of the violin's head, an exquisite and mysterious mask covers the original form of the head. Appendix.1_Lethal Sonic Event RES-009 is extremely sensitive to feedback from listeners. If it detects that a living being in the Securement Chamber shows indifference, criticism, or disgust toward music (identified through facial micro-expression recognition): RES-009 will immediately stop the current movement. Four ghoul arms will violently pull the strings, producing high-intensity infrasound accompanied by extremely high-decibel dissonance. This sound wave causes human internal organs within a 10-meter radius to rupture, eardrums to perforate, and death within seconds due to cerebral blood vessel rupture. Appendix.2_Experiment Record 7451: Lethal Acoustic Spectrum Analysis Date: 20██/██/██ Department: Rosetta Bioacoustics Department Test Subject: D-4922 (implanted with full-body telemetry sensors) [T+00:00] RES-009 enters Active status, and the quadruped body (RES-009-A) begins performing a variation of "Concerto in D Minor." [T+00:45] D-4922 exhibits signs of fatigue per instructions. Telemetry shows RES-009's string tension instantly increases by 400%. [T+00:47] Acoustic anomaly event triggered.