Summer and fall.
Summer and fall
Zuko singing the song of the four seasons that Iroh taught him to his and Katara's baby.
I have no idea how notes work so if someone that does thinks that looks weird, well, it's just meant as a symbol for Zuko singing.
(Lyrics from the avatar wiki website)
Edit: Edited the notes, but just a bit, not doing that again, phew.
Hope it's better now, even tho it's just meant as a symbol