My memories of riding in the car around Denton with my mom are of her playing with her fingernails (exactly as I do now) and listening to the easy listening station broadcasted out of Dallas. Any time I hear Billy Joel's Uptown Girl or For the Longest Time, I am instantly transported back to that car.
I think the same is going to happen for James, but with Katy Perry. He sings her song, Roar, constantly. Mainly the "ro-ar-ar-ar-ar" part. And it is not quiet. He sings it at his full volume. While it is a very empowering song, I would like him to start learning Dark Horse, just for some variety during our commute.
For reference, the words he is singing are:
...fighter, dancing through the fire
'cause I am a champion
and you're gonna hear me roar.
Just in case that is not crystal clear.