[she looks at him curiously, even after a year, she still couldn't quite discern facial expressions as well as other humanoid species. ]

Why not? Singing is singing even without the color of the wind- without a fold receptor, I mean.

[ where she comes from the concept of fold receptors are a new thing, but a year being part of Walkure made her learn that there's always 'an idol fighting bad guys' in history.]

Music is for everyone, it can help someone get through some troubling times and I'm positive all singers think only the best for the people.