22 Up Where They Walk

You can accept this quest after you've spoken with the Queen of Nautica for the first time and acquired the Green Orb. Look for a mermaid located just outside the church in Nautica. She'll tell you about a song she remembers from a young boy and ask you to find it for her.

Your next stop is Gondolia. Use the Zoom spell to get there quickly and make your way to the north-west tower. Inside, you'll find an old man who, as a boy, used to sing the song the mermaid is looking for.

Speak with the old man. He'll teach you the song. Once you've learned it, use Zoom again to return to Nautica.

Find the mermaid again and deliver the song to her.