Rollercoaster: The Musical!

You know, Ferb. One of the best times we ever had was when we build that rollercoaster. We should do it again, but this time as a musical.

In this musical, Phineas and Ferb revisit the day they built their gigantic rollercoaster. Using a combination of music, songs and dance, Phineas and Ferb build a rollercoaster in their backyard, Candace tries to bust them by getting their mom to return from the grocery store early, and Dr. Doofenshmirtz makes another attempt to pull the Eastern Seaboard to the west using tinfoil and a giant magnet.

Episode Summary
Phineas and Ferb make another rollercoaster, but it has something extra: music, songs and dancing. Phineas sings about their big idea, Candace sings about busting her brothers, Isabella sings her catchphrase, and Dr. Doofenshmirtz sings about his evil plan.

Songs

 * Hey Ferb (I Know What We're Gonna Do Today)
 * You're Goin' Down
 * Whatcha Doin'
 * My Whole World is the Screen
 * Mom Look
 * Aren't You A Little Young to Build a Rollercoaster
 * Back in Gimmelshtump
 * Rollercoaster (song)
 * Carpe Diem

End Credits
Carl tries to convince Major Monogram to sing again but he refuses since he was cut off twice already, and Carl tells that he's a good singer also ask to do it again and reminds him about the song Carpe Diem. As Major Monogram was starting to sing, the end logos out and he yells "Oh come on!".

The "Too Young" Line
Sings in Aren't You A Little Young to Build a Rollercoaster

Ferb's Line
Sings in Rollercoaster (song)

Whatcha doin'?
Sings in Whatcha Doin' (song).

Perry's entrance to his lair
Perry enters through a secret door on the side of the house. The same as Rollercoaster.

Background Information

 * This episode was aired in Disney Channel on Demand on January 21, 2011.
 * Perry left his agent hat on for a part of the Carpe Diem song, though no one seemed to notice.
 * There is a game on disney.com called "Coolest Coaster Designer Ever." It is based on the episode, and has the Rollercoaster (song) in it.
 * This is the first episode where Linda's parents and Lawrence's parents appear at the same time.
 * During a section of Carpe Diem, Ferb's larger eye is in front of his smaller eye.
 * This Episode has a record of 9 songs, making this the episode with the most songs.
 * Linda is correct when she says that "moose" is the plural of "moose". "Meese" plays off the joke that since the plural of goose is geese, the plural of moose should be meese.
 * Buford breaks the fourth wall by calling the two boys with the fliers "extras," as does Doofenshmirtz by acknowledging the cut to black at the end of the first act.

Production Information

 * A Promo on Disney Channel Asia showed clips from the episode, along with some other Sneak Peeks.
 * Martin Olson states that he and the staff "think [this episode is] the best thing we've ever done. Dan, Swampy and all of us putting the show together love the way it came together, and dream of it becoming the basis for a Broadway show."
 * According to Laura Dickinson, this episode is a part of Season 2.
 * Originally set to air on Friday, January 28, the airdate was changed to Saturday, January 29 a few days before airing, most likely due to avoid competing against Nickelodeon's highly-publicized SpongeBob SquarePants special event, "Legends of Bikini Bottom.".

International Premieres

 * February 3, 2011 (Disney XD UK)
 * February 20, 2011 (Disney Channel Latin America)

Errors

 * During the song "You're going down", the color of Stacy's neckband repeatedly switched from being the color Tan to the color Purple.
 * This episode takes place in the summer; however, one of the dancers has to "pick up their kid from school." However, It could possibly be Summer School that she is talking about.
 * During the song, Rollercoaster, the building they are going in a corkscrew around is rotating the wrong way, giving the impression that they are going up the corkscrew backwards.
 * When Linda says "I'm worried about you sometimes Candace", her headband color is yellow instead of red.
 * During one of the rollercoaster scenes, the kids from Rollercoaster appear sitting instead of Phineas and Ferb's friends.

Continuity

 * As the title implies, this episode is a musical adaptation of "Rollercoaster" and some scenes were reused.
 * The dancers from Impress My Professor makes an appearance at the grocery store.
 * During Doofenshmirtz's number, Norm can be seen dancing at the end of the male chorus line.
 * The third time Ferb is seen dressed like a woman. ("Let's Take a Quiz", "Gaming the System")
 * Perry's entrance to his lair and Major Monogram's briefing is the same as Rollercoaster.
 * Candace's spacesuit, winter coat and her broken body are seen in the song Mom Look. ("Out To Launch", ("Phineas and Ferb Christmas Vacation!"), ("De Plane! De Plane!")
 * Candace's "Mom Suit" makes a third appearance. ("Toy to the World", "Perry Lays an Egg")
 * Nearly every character in the series up to Season 2 appears in the Carpe Diem song, including Balloony, Meap, and Mitch from "The Chronicles of Meap" the Brobots from I, Brobot, Nosey from The Lake Nose Monster, Mishti Patel from That Sinking Feeling, and Blay'n and Clewn't from Phineas and Ferb Christmas Vacation!, among others.
 * The goozim makes his second appearance ("Got Game?").
 * Screen shot 2011-01-22 at 9.49.57 AM.png Candace and Linda exit the store, Good Future Candace and Bad Future Candace can be seen in the background behind a car. (echoing their appearence in "Phineas and Ferb's Quantum Boogaloo")

Allusions

 * During Hey Ferb (I Know What We're Gonna Do Today), Phineas and Ferb are seen in scenes that parody many famous musicals, including Cats, The Phantom of the Opera, Oklahoma!, Singin' in the Rain, Fiddler on the Roof, West Side Story, The Music Man, Les Miserables, The King and I, and Chicago.
 * During You're Goin' Down, Candace is seen dressed as a superhero resembling Batman, including the classic 'Bat-signal'; as well as a radio announcer next to an exploding blimp, referencing Herbert Morrison's coverage of the Hindenburg disaster which included the now-famous line "oh, the humanity."

Cast

 * Vincent Martella as Phineas
 * Ashley Tisdale as Candace
 * Thomas Sangster as Ferb
 * Caroline Rhea as Mom
 * Dan Povenmire as Dr. Doofenshmirtz
 * Jeff "Swampy" Marsh as Major Monogram
 * Tyler Mann as Carl
 * Dee Bradley Baker as Perry
 * Maulik Pancholy as Baljeet
 * Bobby Gaylor as Buford
 * Alyson Stoner as Isabella
 * Mitchel Musso as Jeremy
 * Kelly Hu as Stacy
 * as Himself
 * as Meap
 * Additional Voices: Dee Bradley Baker, Corey Burton, Skyler Gisondo, Jennifer Hale, Django Marsh, Isabella Murad, Ashley Tisdale