I Must Have It is a song from the VeggieTales episode King George and the Ducky. It is sung by King George and Louis.
Lyrics
King George: What are you saying? That I shouldn't have whatever I want?
Louis: Well...
King George: I must have it, I must get it
You must go and get it for me!
If you want me to be happy,
then you'll show me you adore me
Don't rest another minute
till it's sitting here before me,
If you wanna do your best,
I would suggest you go and bring me back that duck!
Louis: But sir, if I could just jog your memory, you already have quite a few duckies.
King George: Those are yesterday's duckies.
Louis: Huh? Wh-what? These are perfectly good duckies, why, most of your loyal subjects would love to have even one ducky this nice.
King George: I don't like these,
I don't need these,
I don't want these any longer
My affection for those duckies
isn't getting any stronger
Just say I can't have what I want
You couldn't be more wronger.
Don't ask me to explain,
there will be pain if you don't go and get that duck!