At first he asked questions about why they used the song in the movie. It's a bit trickier to explain than you'd expect.
Then he started to sing. And it was one of the coolest, sweetest things I've heard in a while. We sing it in the car. We experiment with the timing. I'll try a different song and James will stick with this one, grinning ear to ear.
Then we found this:
Makes a nice break from the everyday and national crazy going on right now.