Rollercoaster: The Musical!

Episode Summary
The boys set out to re-create the day of the rollercoaster, which was the show's pilot, only this time they’ll spontaneously break out in songs. Each of the show’s catch-phrases will have their own songs in the special episode. 

Songs

 * Ferb, I Know What We're Gonna Do Today
 * Hey, Where's Perry? (possibly)
 * Whatcha Doin'?
 * Aren't You a Little Young... (possibly)
 * Rollercoaster (song)
 * Mom Look
 * Carpe Diem
 * Curse You, Perry the Platypus! (possibly)
 * Oh, There You Are, Perry (possibly)

Perry's entrance to his lair
None.

Continuity

 * This is the 5th time they build a rollercoaster ("Rollercoaster", "One Good Scare Ought to Do It!", "Fireside Girl Jamboree", "Phineas and Ferb-Busters")
 * This may be the second time the lines "I know what we're gonna do today" and "Hey, where's Perry?" are in a song ("Unfair Science Fair").
 * Based on the song Mom Look, it is implied that the scenes in this episode will be similar that of the scenes in the episode Rollercoaster.

Cast

 * Vincent Martella as Phineas
 * Ashley Tisdale as Candace
 * Thomas Sangster as Ferb
 * Caroline Rhea as Mom
 * Mitchel Musso as Jeremy
 * Dan Povenmire as Dr. Doofenshmirtz
 * Jeff "Swampy" Marsh as Major Monogram
 * Richard O'Brien as Dad
 * Dee Bradley Baker as Perry
 * Alyson Stoner as Isabella