Barry, This may or may not be the song you're looking for. It was written (I think) by Michael Hurley.

THE WEREWOLF

Oh the werewolf, oh the werewolf comes stepping along
He don't even break the branches where he's been gone
You can hear his long holler from way 'cross the moor
That's the holler of the werewolf when he's feellin poor

He goes out in the evening when the bats are on wing
And he kills some young maid before the first scene
Oh the werewolf, oh the werewolf have sympathy
Cause the werewolf might be someone just like you or me

Once I saw him in the moonlight when the bats were aflyin
All alone I saw the werewolf and the werewolf was cryin
Crying nobody, nobody, nobody knows
How much I love the maid as I tear off here clothes
Crying nobody, nobody, nobody knows my pain
When I see that its risen, the full moon again

Oh Igor he said its this little flute that I play
But I never play my song by the light of day
(spoken: When you do play, what do you play?)
Eeeee Eeeee Eeeee …
Eeeee Eeeee Eeeee …

Oh the werewolf, oh the werewolf comes stepping along
He don't even break the branches where he's been gone
Oh the werewolf, oh the werewolf comes travelin along
He don't even crush the leaves where he's been gone