Standard lack of ownership disclaimers apply, as well as an advance apology for what is probably a very awkward translation from German. Song is question is Engel by Rammstein.
Dean smacked the back of Castiel's hand as the angel reached for the radio dial.
"You know the rule - hands off the radio."
"I don't like this song."
"It's Rammstein, and it's awesome. How can you not like it?"
"The chorus makes me...uncomfortable."
"Oh come on - it's in German. Can you even tell what they're saying?"
"Of course. I understand all human languages."
"Well, what are they singing?"
"Only when the clouds are sleeping can we see the heavens. We are afraid and alone. God knows I don't want to be an angel."
*click*
They drove on in silence.