So I downloaded the song last week from iTunes, and other than being way too short, its a great song, heres the lyrics:

All I need is a bitter song
To make me better, much better
All I need to write is a bitter song
To make me better, much better

It found me, to hold me
But I don't like it at all,
Won't feed it, won't grow it
It's folded in my stomach
It's not fair, I've found love
It made me say that get back
You'll never, see daylight if I'm not strong
It just might

All I need is a bitter song
To make me better, much better
All I need to write is a bitter song
To make me better
I feel better
I feel better

For reference, Song From Grey's Anatomy, Artist: Butter Fly Boucher, Title: A Bitter Song