IRC=Isabella's Really Cool

Basically, Isabella shows up one day dressed like a Bad Girl or something. Phineas asks her about this, and she says he'll find out. And he does: Turns out Isabella started a new band: The Good, The Bad, and the Phineas. She tells Phineas to come to her concert and that afterwards, he can join the band if he wants, which he does.

 Songs 

I'm Cute But Deadly by The Good, The Bad and the Phineas

 Trivia 


 * This is the fourth time Isabella was in a band ("Flop Stars", "Tip of The Day", "Oh There You Are Perry")