Ok. I've had a song going through my head the last two mornings. Can anyone help me figure out the rest of the words, and where the song is from? I'm going to try to Google it, to see what I come up with, but let's see what you guys can guess. Here's the song:

"Let me out, let me out
Let me see the sun
Let me sprout
Please let me grow."

I'm quite sure I know where it's from, but Eben swears I'm wrong. What do you think?