Soundtrack Phineas and Ferb: Across the 2nd Dimension - The soundtrack of the film, Phineas and Ferb: Across the 1st and 2nd Dimensions, includes 8 songs from the movie and 14 songs from the series. It was released on August 2. Former Guns N' Roses guitarist Slash co-wrote and performed in a song for the soundtrack titled Kick It Up a Notch. The song I Walk Away is not included in the soundtrack for unknown reasons.
| No. | Title | Performer | Length |
|---|---|---|---|
| 1. | "Everything's Better With Perry" | Robbie Wycoff | 1:46 |
| 2. | "Perfect Day" | Danny Jacob | 1:14 |
| 3. | "Hey Ferb" | Vincent Martella | 1:27 |
| 4. | "Brand New Best Friend" | Dan Povenmire | 2:18 |
| 5. | "You're Goin' Down" | Ashley Tisdale, Alyson Stoner, and Kelly Hu | 1:12 |
| 6. | "Whatcha Doin'" | Alyson Stoner | 1:18 |
| 7. | "Summer (Where Do We Begin?)" | Vincent Martella and Danny Jacob | 2:43 |
| 8. | "Perry the Platypus (Extended Version)" | Randy Crenshaw | 2:53 |
| 9. | "Takin' Care of Things" | Danny Jacob | 0:57 |
| 10. | "Not Knowin' Where You're Going" | Jeff "Swampy" Marsh | 1:29 |
| 11. | "Brand New Reality" | Danny Jacob | 1:27 |
| 12. | "There's a Platypus Controlling Me" | Dan Povenmire | 1:19 |
| 13. | "Mysterious Force" | Ashley Tisdale | 1:33 |
| 14. | "My Ride From Outer Space" | Danny Jacob | 1:34 |
| 15. | "Come Home Perry" | Cast of Phineas and Ferb | 2:02 |
| 16. | "Back in Gimmelshtump" | Dan Povenmire | 1:14 |
| 17. | "When You Levitate" | Carmen Carter | 1:00 |
| 18. | "You're Not Ferb" | Danny Jacob | 1:03 |
| 19. | "Robot Riot" | Jaret Reddick, Carlos Alazraqui and Steve Zahn | 3:17 |
| 20. | "Rollercoaster" | Vincent Martella | 2:18 |
| 21. | "Carpe Diem" | Cast of Phineas and Ferb | 1:50 |
| 22. | "Kick It Up a Notch (feat. Slash)" | Vincent Martella, Dan Povenmire, and Slash | 4:05 |
| Total length: | 39:52 | ||
