Now, when we first see Frank Archer on board a train with Major Armstrong, he's looking through paperwork while humming "Ode to Joy." A classical piece by Ludwig van Beethoven.
Now here's the thing, as we can all tell, the HAGAREN world doesn't take place in our world. It's a completely different world. So how in the world could Archer be humming music made by a man who doesn't exist in their world?
These are the kind of things that keep me awake at night. I'm such a dork for even noticing this, despite having first seen the episode last year and not catching it the first time. XD Wonder if anyone else caught this?