"What Might Have Been" is a duet between Phineas and Isabella in "Act Your Age" as Isabella is leaving for college, she reminisces about all the past summers she spent with Phineas. Meanwhile, as Phineas is walking down the street, he thinks about how oblivious he was to Isabella's romantic advances over the years, even though in hindsight they were really obvious. As they go off in two separate directions, they both wonder what might have been if they had gotten into a romantic relationship together.


Lines in blue are only heard on the album

Isabella: I wanted you to see me,
But for so long, you were blind
Now it's time to face tomorrow,
And leave all that stuff behind
Of what would our lives have been like,
If you'd just given me a sign
'Cause I like you more than every other
Thing I like combined...

I spent so many summers,
Hoping something would begin
I thought that I was over you,
But here I am again...
What might have been

Vivian: Phineas, honey, how are you?
Phineas: Hi Mrs. Garcia-Shapiro. Uh, is Isabella here?
Vivian: Oh no, sweetie, she's gone.
Phineas: Gone like driving... car... school... gone?
Vivian: Yes, you just missed her, it's too bad you didn't get to see her off. You know, since you were kids, she's had a huge crush on you.
Phineas: (sighs) I wish I had known.

Phineas: I can't believe that all this time,
You never said a word
Although it's possible you did,
And I just never heard
I never even noticed,
I guess I wasn't that alert
But I must say that, in retrospect,
You were being quite overt...

And now our endless summer,
Is finally coming to an end
I tried to make the most of every day,
But now the years just seem misspent...
What might have been

(Guitar solo)

Isabella: I could've been your girlfriend
Phineas: I could've been your fella
We might've been an item...
Isabella: They would've called us "Phinabella"
Phineas: I would've held the door for you,
I would've shared my umbrella
Isabella: You could've held my hair back,
When I was sick with salmonella
(Other Isabellas and Buford Cupid: Sick with salmonella...)

Isabella and Phineas: We could've been together,
All you had to say was when
And though I wanted so much more,
I guess you'll always be my friend...
What might have been

What might have been

Phineas: What might have been.
Isabella: (sighs) What might have been.


View the image gallery for What Might Have Been.

Background Information

  • Third song to involve Isabella's relationship with Phineas ("City of Love", "Isabella's Birthday Song").
  • The fourth time Isabella sings about Phineas ("City of Love", "What'cha Doin'?'", "Isabella's Birthday Song"), and the first time Phineas sings about Isabella.
  • If you listen closely during the last verse, you can hear Isabella's theme music (aka the "whatcha doin'" music) playing in the background.
  • named this song #10 in their "Top 10 Saddest TV Cartoon Songs" list.[1]

Production Information

  • The song was first seen via Twitter tweets.[2][3] and later confirmed in a live Spreecast chat.
  • On January 25, 2013, Robert Hughes announced that the song features the word "Phinabella", a popular fan term for the Phineas/Isabella pairing.[4]
  • This song was co-written by Madison Scheckel, the daughter of Benita Scheckel, the voice of Lacie.
  • The name was revealed by Dan Povenmire.[5][6]


BMI Work #19753044



"Ballad of Badbeard" (Instrumental)
Songs Next:
"Danville for Niceness" (Instrumental)
"Curtain Call/Time Spent Together" (#15)
Phineas and Ferb: Last Day of Summer (Original Soundtrack) Next:
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