Some months ago here, I linked you to a number of American musicals as performed in Korea — some in English, some in Korean. Here, suggested to me by Micki St. James, is "We Both Reached for the Gun" number from the show Chicago in Korean.
In the number, Roxie Hart sits on the knee of the gent playing scummy lawyer Billy Flynn and she makes like a ventriloquist dummy. I've seen this number staged with the lady playing Roxie doing her own voice but trying to make it sound like it's coming from Flynn. I've seen it done with the actor playing Flynn doing both parts. I've seen Roxie's voice provided by someone not on the stage. I'm not entirely sure which of the latter two options this is…