When someone asks me to sing a song:

Me: How does a ragtag volunteer army in need of a shower, somehow defeat a global superpower? How do we emerge....

Or

Me: Carry on my wayward son, there'll be peace when you are done, lay your weary head to rest, Don't you cry no more.

Or even

Me: John and Mary, husband and wife, bringing home a brand new life. His name is Sammy, I'm big brother Dean. The perfect family, or so it seemed....

Long story short, either Hamilton or random songs in Supernatural