I'm sorry to sound very ignorant, but does the audience understand what she is singing?
Some probably do, many probably don't. But in Korea, like in most countries internationally, listening to music that's not in your native tongue isn't considered weird like it is in America.
Some probably do, many probably don't. But in Korea, like in most countries internationally, listening to music that's not in your native tongue isn't considered weird like it is in America.