Isabella's Birthday Song

 is a song sung by Isabella Garcia-Shapiro in the episode "Happy Birthday, Isabella". In the song, she expresses her desire to just have one thing for her birthday: some time alone with Phineas.

Lyrics
Isabella: Today is my birthday and there's just one thing I'm wishing for

To spend some time alone with a certain someone I adore

It doesn't have to be formal or fancy

It's not a deal breaker if it's not romancy

After all of this time, I've lowered my expectations

Baljeet, Buford: Expectations...

Isabella: Don't need a limo or a corsage,

Just him and me without the entourage

And I won't be upset (I won't be upset)

At this emotional roulette (Emotional roulette)

I'll take any little thing that I can get…

Like eating some french fries: I'll take it!

Stuck on a tarmac: All good! (I'm good!)

Trapped under rubble: That's awesome! (That's awesome!)

Moving a piano: But we'll look good!

Getting (????) : Sign me up! (Sign me up!)

In a smelly subway car: I'm in! (I'm in!)

We could be reupholstering a love seat:

I call that a win-win!

'Cause that's all I really want;

Just time alone with my triangular savant

I'm not asking for the moon; I'm just a simple girl,

And I would change my mournful tone…

If we could just be alone

Just be alone…

Phineas and kids: Happy birthday, Isabella!

Background information

 * Although this song is about Isabella wanting to spend time with Phineas, his name is never sung in the lyrics.