Here's what I make of it by ear, Reeltime. Not guaranteed 100%: any corrections welcomed!

SPIRAL STAIRCASE

(Ralph McTell)

I'm running up a spiral staircase
Still in a hole in the ground
And the staircase is swimming
And my head is spinning
I don't even dare to look round

Cho #1:
And I'm running up a spiral staircase
I can't reach the top
I'm running up a spiral staircase
And I'm too scared to stop.
And there's nothing anybody can do
To stop the staircase like a giant corkscrew
From spinning around
And around, and around

Now in the beginning I only saw you
When the staircase hit your vision line
But now that it's moving round so fast
Well I see you all of the time

Cho #1:

Now in the beginning it was moving so slowly
I didn't notice it at first
But now that it's moving round so fast
I think my poor head is going to burst.

Cho #2:
And I'm running up a spiral staircase
I can't reach the top
I'm running up a spiral staircase
And I'm too scared to stop.
And I believe I'm a-going to shoot through
Unless the staircase like a giant corkscrew
Stops spinning around
And around, and around

Now without a doubt I'm wearing out
And I'm really beginning to tire
And though the staircase is still
It just about feels
As though its going to catch on fire

Cho #2:

WassaiL! V