I could while away the hours conferrin' with the flowers,
Consulting with the rain;
And my head I'd be a scratchin' while my thoughts were busy hatchin'
if I only had a brain.
I'd unravel ev'ry riddle for any individdle
In trouble or in pain
With the thoughts that I'd be thinkin', I could be another Lincoln
if I only had a brain.
Oh, I -- could tell you why -- the ocean's near the shore,
I could think of things I'd never thunk before,
And then I'd sit and think some more.
I would not be just a nuffin', my head all full of stuffin',
My heart all full of pain;
And perhaps I'd deserve you and be even worthy erv you
If I only had a brain.
No, Ray Bolger was not the only voice on the song, and yes, it does have two other verses as written and as performed in the movie. This is merely an arrangement I happen to like.