Well, here it is. The Theme Song I wrote for the entire Ray Gun stories.
While the theme may reminiscent with Today's Gonna be a Great Day
but I listened to The My Little Pony: Friendship is Magic
theme song: youtu.be/pBcqNiECUFs
to make it different. Remember, alongside Summer Vacation, the themes are imagination and friendship. I really love the joke about Ray Gun wondering if her theme song is too familiar to her father and Uncle Ferb's theme song and Phineas relpied "Yes, Yes It Is."
I hope you guys like it. Maybe, next time, Ernie will have his own theme song
If there's someone who would sing it, I was thinking about Grace Potter and Cheap Trick singing it.
Critique it if you like.
Edit 1: Added in Her friends for verses based on their interests.Phineas and Ferb
(c) Dan Povenmire & Jeff 'Swampy' Marsh & Disney
Rachel Flynn and Theme Song (c)