6yr ago there was a talented youth being killed. his fiancée Reiko Akiba is now a very popular Soprano. the people who killed Reiko's fiancé are all killed by the point of "Definite Perfect Pitch" (Jor-Dai-Yin-Gan) from this youth...
Serial murders involving all kinds have happened. All the victims are from a Music School led by a famous pianist. Conan and company have been invited to a opening concert of the Music Hall built by the pianist. The biggest attraction of this concert is the world famous violin called "Stradivarius" and a special appearance of a singer who has perfect pitch.