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 attempts to pull the Eastern Seaboard to the west using tinfoil and a giant magnet.

Songs

 * Hey Ferb (I Know What We're Gonna Do Today)
 * You're Goin' Down
 * Whatcha Doin'
 * Aren't You A Little Young to Build a Rollercoaster
 * Rollercoaster (song)
 * Mom Look
 * Carpe Diem
 * Doofenshmirtz's Backstory

End Credits
Major Monogram and Carl discussing each other about Major Monogram's song cut oof twice, and take about Carpe Diem. As Major Monogram was about to start his song, the end logos pops out and he yells "Oh come on!".

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 XD on Demand on January 21, 2011.
 * Perry left his agent hat on for a part of the Carpe Diem song.
 * 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.

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.

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.
 * The third time Ferb is seen dressed like a woman. ("Let's Take a Quiz", "Gaming the System")
 * When Candace and Linda exit the store, Candace from the good future and Candace from the bad future are seen in the background behind the car. ("Phineas and Ferb's Quantum Boogaloo")
 * Perry's entrance to his lair and Major Monogram's briefing is the same as Rollercoaster.
 * Candace's spacesuit, Christmas dress and her broken body are seen in the song Mom Look. ("Out To Launch", "Phineas and Ferb Christmas Vacation!", "De Plane! De Plane!")
 * Balloony is seen again. ("The Chronicles of Meap")
 * Several characters make cameos such as 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. Most of the characters appear in the Carpe Diem song.

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; 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