Hi Puffin! Glad to help! The theme tune is CCGGAAGG. Every time a kite is tapped, a corresponding note will be played.
- The Red Kite stands for note C
- The Yellow Kite stands for note G
- The White Kite stands for the note A
So, tapping the kites in this order will unlock the achievement "Arrival of Nightwind": Red, Red, Yellow, Yellow, White, White, Yellow, Yellow.
Hope this helps, and please let me know if you encounter any issues! Cheers!