[the lyrics leave Kaoru a little baffled, but the overall tone and emotion of the song is conveyed. spooky indeed... once Rin is finished:]

—It was an interesting song, certainly. Very fitting for a place like this. [that compliment is toeing the line of "i'm being polite for the sake of politeness you strange child", but there is definitely some genuine admiration in Kaoru's expression.] Your voice is quite unique as well, and... well, to be honest, you're one of the first pianists I've ever had the fortune of meeting, but your playing is captivating. [a gesture toward the piano as Rin continues the next song.]

An unsettling piece for an unsettling place... Ah, but if you would be willing to share, I would appreciate it.