S01E544: The Hand That Plays in Dissonance

Conan, Kogoro, and Ran all attend a concert at a local department store. After the drummer, Yuusuke Nakamura, hears about a CD Ran is searching for, he tells her to follow him to the storage room where he has a copy of it. While there, they discover the lead vocalist, Yukiko WaTanbe, dead in the storage room.