Gummy says "a singer must sing" before singing her song. After listening to her, HS says she's so touched about Gummy's comment, since it comes from the top Korean singer (around 2:40). YH responds, "Then since you're an actress, please show us some acting. You're the top Korean actress." HS retorts, "Hey, if Gummy is your music sunbae (senior), aren't I such a high (acting) sunbae to you, too??" so YH apologizes and kneels XP