That Christmas Feeling

 is sung during the montage of Phineas, Ferb, and their friends redecorating Danville for Christmas. ("Phineas and Ferb Christmas Vacation")

Lyrics
(Lyrics in italics are only on the soundtrack version.)

We're hanging the star above our tree,

And don't it look lovely?

The lights and the tinsel sparkling for you!

I got that Christmas feeling,

I take it everywhere I go.

And make that Christmas feeling grow!

So warm by the fireplace we glow,

All cozy and happy.

Hang all the stockings in a row with you!

I got that Christmas feeling,

I take it everywhere I go!

And make that Christmas feeling grow.

It feels like Christmas,

Christmas again

(guitar solo)

I got that Christmas feeling,

I take it everywhere I go!

And make that Christmas feeling grow.

It feels like Christmas (Christmas),

Christmas (Christmas),

Come on, I know you don't want to miss this!

Let's make that Christmas feeling grow,

Oh! Let's make that Christmas feeling grow!

Background Information

 * Although Olivia Olson sings this song, her character Vanessa is not seen on-screen.
 * After this song ends, Candace seemingly parodies this song. The lyrics are:
 * Got that Christmas feeling,
 * Tricked Jeremy into writing a letter to Santa, yeah, yeah,
 * That old Christmas feeling
 * Singing what I'm doing, yeah, yeah


 * The Back-up singer in the song is Danny Jacob.
 * Ferb was slinging christmas decorations like Spider-man