Back in Gimmelshtump

, sung by Heinz Doofenshmirtz, takes place after Doofenshmirtz explains his scheme to Perry the Platypus ("Rollercoaster: The Musical!").

Lyrics
Dr. Doofenshmirtz: Back in Gimmelschtump

I always had to keep it real

Cause when you grow up in Gimmelshtump

Young Heinz: Your childhood is less than ideal!

Dr. Doofenshmirtz: So I don't dwell on how I'll crawled my way out of the gutter

No I don't!

When people ask me what I mean, I say

D-D-D-Do I stutter!

Dr. Doofenshmirtz: But I'm no longer a hater

Cause I got an Inator

And a over-complicated scheme

I get a couple of checks

Every month from my Ex

So I can finance my coming regime!

And though my past was a wreck

I won't let it affect

My aspirations to cause mass hysteria

Cause I'm as sure as can be

That it's my destiny

To be the ruler of the Tri-State Area!

Background Information

 * In a similar theme to History of Rock, more than one genre of music was heard.
 * Balloony and Norm can be seen in the background.
 * Dr. Doofenshmirtz calls Charlene Doofenshmirtz his ex-wife again ("Hail Doofania!", "Thaddeus and Thor", and "Finding Mary McGuffin")
 * The Background Dancer says she's "picking up my kid from SCHOOL", while this episode takes place in summer. (although this could mean summer school)
 * He is wearing a WWI era German helmet.

Continuity

 * Doofenshmirtz has a big belly, which means he still hasn't lost those ten pounds. ("Fireside Girl Jamboree")
 * The tune of the second part of the song is similar to Impress My Professor.
 * His backup dancers haven't seemed to change much but how he pays them enough is unknown.