Temporary (Bonnie Kellswater, Traditional)

"Alright, I'll take it. But it's only temporary, as soon as you get that light back in, I'm pulling you up, and I'm giving it right back to you, deal?"
- Hurley, The End

Here's Hurley reluctantly telling Jack that he will take the job of Island protector, to the tune of the Irish Rovers'Bonnie Kellswater.  (The version I used has a fourth verse, so again, it doesn't quite synch up.)

Temporary

Fine, I’ll help you.  I will drink the spring water,
And I swear that I will safeguard the light.
But I’m only doin’ this till you come back, dude.
Yeah, it’s just temporary, all right?

When I came here, I felt so unlucky.
Thought I never would have peace of mind.
But you gave me a job.  I stopped running.
I thought, Hey, don’t be scared.  Just be kind.

So I tried my best at making people happy
From the minute you stuck me with Claire.
But disasters kept on hitting those around me.
Was I cursed or was life just unfair?

Jacob told me I was blessed, and I believed him,
Though it sure was surprising to me.
But I know that if you hadn’t seen it first, Jack...
Well, I shudder to think where I’d be.

Now, I see that this water is muddy,
While the water that you drank was clear.
It’s a sign that you’re comin’ back, buddy,
‘Cause you always were meant to rule here.

So I’ll help you.  I will drink the spring water,
And I swear that I will safeguard the light.
But I’m only doin’ this till you come back, dude.
Yeah, it’s just temporary, all right?
Yeah, it’s just temporary, all right?