Two Times Trouble (1) Meitantei Conan : Season 1 Episode 81

Ran and Sonoko are getting ready to attend a huge concert by the very popular J-Pop band Two-Mix. Some hours before that, Conan and the Detective Boys go to a coffee parlor and meet a lady with sunglasses and a cap... who turns out to be the singer of the group, a woman named Minami Takayama whose voice is rather similar to Conan's.