The Twelve Days of Christmas

 is an English Christmas carol that enumerates a series of increasingly grand gifts given on each of the twelve days of Christmas (25th December to 5th January). It is sung by the cast of Phineas and Ferb in Phineas and Ferb Holiday Favorites.

Lyrics
Phineas On the first day of Christmas

Please, Santa, give to me

A jet-powered rocket ski

Candace: On the second day of Christmas

Please, Santa, give to me

Two busted brothers

Phineas: And a jet-powered rocket ski

Isabella: On the third day of Christmas

Please, Santa, give to me

A sash full of patches

Candace: Two busted brothers

Phineas: And a jet-powered rocket ski

Jeremy: On the fourth day of Christmas

Please, Santa, give to me

A silver guitar

Isabella: A sash full of patches

Candace: Two busted brothers

Phineas: And a jet-powered rocket ski

Dr. Doofenshmirtz: On the fifth day of Christmas

Please, Santa, give to me

The entire Tri-State Area!

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: Two busted brothers

Phineas: And a jet-powered rocket ski

Baljeet: On the sixth day of Christmas

Please, Santa, give to me

A kiss from a girl

Dr. Doofenshmirtz: The entire Tri-State Area...

''Or at least a large portion of it. I don't...I don't want to get too greedy.''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: Two busted brothers

Phineas: And a jet-powered rocket ski

Buford: On the seventh day of Christmas

Please, Santa, give to me

More nerds to bully

Baljeet: A kiss from a girl

Dr. Doofenshmirtz: The entire Tri-State...

''You know what, how about just two of the three states? That's fair, right? Deal?''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: Two busted brothers

Phineas: And a jet-powered rocket ski

Major Monogram: On the eighth day of Christmas

Please, Santa, give to me

Promotion to colonel

Buford: More nerds to bully

Baljeet: A kiss from a girl

Dr. Doofenshmirtz: One single state!

''I feel like I was overreaching before. Just...just one state area will be fine. Go on with the song.''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: Two busted brothers!

Phineas: And a jet-powered rocket ski

On the ninth day of Christmas

Please, Santa, give to me

(Perry chatters)

Major Monogram: Promotion to colonel

Buford: More nerds to bully

Baljeet: A kiss from a girl

Dr. Doofenshmirtz: Five golden rings!

''Y'know, I had to sing it that way at least once. It's tradition... and I'm traditional.''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: Two busted brothers!

Phineas: And a jet-powered rocket ski

On the tenth day of Christmas

Please, Santa, give to me

Carl: A job that pays me money

(Perry 'chatters')

Major Monogram: Promotion to colonel

Buford: More nerds to bully

Baljeet: A kiss from a girl

Dr. Doofenshmirtz: ''Yeah, actually, promotion to colonel sounds pretty sweet. Is it... is it too late to change mine?''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: TWO BUSTED BROTHERS!

Phineas: And a jet-powered rocket ski

Vanessa: On the eleventh day of Christmas

Please, Santa, give to me

My own set of wheels

Carl: A job that pays me money

(Perry 'chatters')

Major Monogram:: Promotion to colonel

Buford: More nerds to bully

Baljeet: A kiss from a girl

Dr. Doofenshmirtz: ''You know, this is way too much pressure, being put on the spot for one thing that I want from this mythic all-powerful gift giver who only comes once a year. It's insane!''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: TWO BUSTED BROTHERS!

Phineas: And a jet-powered rocket ski

On the twelfth day of Christmas

Please, Santa, give to me

Ferb: One line of dialogue

Vanessa: My own set of wheels

Carl: A job that pays me money

(Perry 'chatters')

Major Monogram: Promotion to colonel

Buford: More nerds to bully

Baljeet: A kiss from a girl

Dr. Doofenshmirtz: ''How about just some almond brittle? It's a realistic request, right?''

Jeremy: A silver guitar

Isabella: A sash full of patches

Candace: Ah, forget it!

All: And a jet-powered rocket ski!

Dr. Doofenshmirtz: ...inator!

Background Information

 * This is the 3rd longest Phineas and Ferb song written for the series, beating Summer Belongs to You by ten seconds, but is behind Kick It Up a Notch by 13 seconds. The only longer song that wasn't written for the series is "The Christmas Song (Chestnuts Roasting on an Open Fire)", by Vanessa.
 * When shown on TV in the year 2010, this song was taken to the 12th day quickly by Dr. Doofenshmirtz saying "Just skip to the 12th day already!" This was done so Disney Channel or Disney XD could continue to their show.

Songwriters

 * Dan Povenmire
 * Jeff "Swampy" Marsh
 * Martin Olson
 * Jim Bernstein
 * Scott Peterson

Continuity
thumb|300px|right|A shorter version of the song
 * Dr. Doofenshmirtz mentions his love of almond brittle again.
 * Candace appears to grow more frustrated as she sings her line towards the end, most likely because she feels she may never get her wish.
 * Baljeet and Jeremy's wishes are the same as what they were in "Phineas and Ferb Christmas Vacation!".
 * Vanessa mentions that she wants a car for the third time. The first time was "Vanessassary Roughness", and the second was "Finding Mary McGuffin".
 * Ferb uses his natural voice to sing for the second time. The first time was in The Ballad of Badbeard.
 * The episodes that the clips used in this song were taken from are shown here in no particular order; "Phineas and Ferb Christmas Vacation!", "Phineas and Ferb Get Busted!", "Isabella and the Temple of Sap", "Flop Starz", "Candace's Big Day", "Finding Mary McGuffin", TBA, "Raging Bully", Rollercoaster".
 * On the Disney website, there is a significantly shorter version in which Dr. Doofenshmirtz convinces them to skip to the twelfth day already after reaching the third.
 * In the shorter version of the song, the Fireside Girls are wearing the same winter attire like Gretchen and Adyson Sweetwater wore in "S'Winter".
 * Dr. Doofenshmirtz sings part of the song closer to its original version in "Phineas and Ferb Christmas Vacation!", The way he sang it as follows is, "And a Partridge on a Perry... the platypus!", which was very similar to the original, which goes, "And a Partridge on a Pear Tree". Towards the end of this version of the song, he sings the fifth day exactly how it traditionally is, saying that he had to do it at least once because he is "traditional".