I have read an article on the internet that says on one occasion Moonbyul asked fans to hear each MAMAMOO member's voice and guess whose voice it belongs to. When it was Moonbyul and Solar's turn, it wasn't just fans who were confused about who was being heard, but the members were confused.
What is the name of the event or show referred to by the article?
What is the name of the event or show referred to by the article?