Uploaded February 2015 | Updated September 2026, 1 week ago
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"What Might Have Been" is a duet between Phineas and Isabella in the Season 4 episode "Act Your Age". As Isabella sadly moved on with Phineas and leaves for college, while Phineas sadly goes home for not able to see Isabella and tell his feelings to her. Finally, as both started to missing each other and what could they had together. (Video pitch is slightly altered)
Follow me on Twitter: twitter.com/Fan11Phineas
"What Might Have Been" is a duet between Phineas and Isabella in the Season 4 episode "Act Your Age". As Isabella sadly moved on with Phineas and leaves for college, while Phineas sadly goes home for not able to see Isabella and tell his feelings to her. Finally, as both started to missing each other and what could they had together. (Video pitch is slightly altered)
![Phineas and Ferb Back to the 2nd Dimension Ending [CLIP][SPOILERS]](https://i.ytimg.com/vi/pnsCZikEvEA/mqdefault.jpg "Phineas and Ferb Back to the 2nd Dimension Ending [CLIP][SPOILERS]
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The ending of the sequel to 2011s Across the 2nd Dimension TV movie. Honestly, the ending is very disappointing. What do you think of it?")
![Phineas and Ferb - Summer All Over the World [SOUNDTRACK] Lyrics](https://i.ytimg.com/vi/qxjAZvN0szg/mqdefault.jpg "Phineas and Ferb - Summer All Over the World [SOUNDTRACK] Lyrics
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Soundtrack version of the opening song from P&F Save Summer, Summer All Over The World")
![Phineas and Ferb - Curtain Call / Time Spent Together [SOUNDTRACK] Lyrics](https://i.ytimg.com/vi/x4HJuAT-owc/mqdefault.jpg "Phineas and Ferb - Curtain Call / Time Spent Together [SOUNDTRACK] Lyrics
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Based on request, the soundtracked and FULL version of the FINALE song, Curtain Call / Time Spent Together from the series finale, Last Day of Summer.")
