"You Gotta Think Big" is a song from The Amazing World of Gumball. It was featured in the episode "The Genius" during Gumball's Brain's training montage. The song is sang by Richard Overall. An instrumental version was also heard in "The Fridge," and a part of the song plays in "The Grades."
I was a feeble minded guy
I'd slip on ice and wonder why
So many obstacles were thrown my way
On a down ward slide each and every day
But something popped inside my brain
I got up to fight that fight again
And I knew what to do
I went through the mental pain
You gotta think big
Pretty soon you'll make that quantum leap
Make your brain your finest body part
The greatest minds from yesterday
Will be crushed to dust 'cause I'm on my way
(Think big, think big)
You gotta think big!