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!

Doofenshmirtz from taking over the Tri-State area.” The first two episodes of “Phineas and Ferb” air on June 5 at 8 p.m. ET on Disney Channel and Disney XD. The first 10 episodes of the ...