I was in a classroom where Hank Green was leading a sing along. We were writing songs together on the spot - he would jot a lyric on the chalk board and draw a web and start writing things that rhymed, and whatever we liked best went in the song. I don't remember what the song we were working on last was about, but it was a story song. Then Hank kept trying to turn it into an educational science song. Classic Hank!