They are the creators and main composers behind the hit animated series Phineas and Ferb. They co-wrote the iconic theme song “Today Is Gonna Be a Great Day” and contributed significantly to ...

Now that Phineas & Ferb has a revival show, their older sister, Candace Flynn, has taken over the show's theme song, making it her OWN!

"How many days of summer do these mfs got?" - another X user asked (via X/@WhosM1GUEL) And finally, X users hilariously suggested that the first song that Phineas and Ferb should play is "Scotty doesn ...