Party for the Leafy Spirits
The quest is unlocked after completing The Great Plateau scenario.
"To blow off a little steam after battle, the Koroks are planning to throw a big dance party! The festivities are bound to go late into the night, so bring something that will light up the forest."
"After their energetic all-night dance party, the Koroks went out like a flight. Princess Zelda burned some soothing incense to ensure their dreams were as sweet as could be."