bart and lisa show up and say 'phineas, Isabella, Abigail, rachel if 3 creepy looking girls show up don't trust them they're planning to turn everyone against each other and use the negative energy to power up their mind control powers.' when sunset shimmer is about to go introduce herself to the dazzlings during the rainbooms first rehearsal, Isabella says 'probably not a good idea, shimmer. They might use the fact that you are an ex villain as a catalist for their plan.' pinkie, rainbow and everyone else are willing to accept phineas, Isabella, Abigail, Rachel bart and lisa into the band but twilight objects insisting they need to prove their sense of rhythm is worthy. Phineas and Isabella duet the famous song gitchee gitchee goo from phineas and ferb's timeline to prove their worth and lisa uses her beautiful singing voice to prove herself while letting Abigail Rachel and bart beatbox in the background to prove their worth. Twilight decides 'ok phineas, Isabella and lisa you're in as backup singers, Abigail and Rachel are gonna be bassists and bart you'll be our secondary drummer' at lunch that day they notice that the dazzlings are already starting their evil plan, they try to tell principal celestia about it. However the principal suggests a battle of the bands. Part 3 will be the finale