Sanoja: Gilbert O'Sullivan. A Stranger In My Own Backyard. Number 4.

:
Number 4 In the beginning
There was one-
Himself had just began
Then along came Number 2-
The other way round is your clue
And after that came 3-
Written by you know me
Now I'm not saying anymore
Except to tell you
That this is not Number 1: number2:
Number 3: or Number 5 But Number 4