Doofenshmirtz: Back in class, Evil 101...
I always had so much fun...
Though the one who advised me...
Openly despised me...
Still I always tried to be number one
Well I wanted a mentor to share my world view
But I got a tormentor, I was hated, it´s true
Now I have one more chance, and it could mean my advancement
So there´s only one thing I must do:

I must impress my professor
Singers: (He´s got to be good)
Doofenshmirtz: I must impress my professor
Singers: (He´s misunderstood)
Singers: He needs validation for his evil creation

Doofenshmirtz: (Ooh, ooh)

Doofenshmirtz: Like any good evil scientist would

Doofenshmirtz: I must impress my professor to be a success

Singers: He must impress his professor to be a success!

Doofenshmirtz: Or I will still be a flunky, a diploma-less monkey

Singers: Or he will still be a flunky, a diploma-less monkey

All: In the eyes of this person
Whose opinion may worsen
Doofenshmirtz: If my evil invention´s not great

Doofenshmirtz: I must impress my professor!
Singers: (Impress his professor)
Doofenshmirtz: I must impress my professor!
Singers: (Impress his professor)
Doofenshmirtz: I must impress my professor
All: Before it´s too late!