I don't have an answer to that, because I don't really listen to the radio. It's mostly pop music, which I hate.
Hopefully, it won't need to. Worst case scenario, though, it wouldn't hurt to try. Just hope that border security doesn't have any burrowing Pokémon.
You are suddenly thrown into the universe of the last game you played as an ordinary civilian. How screwed are you?
Last game I played was XCOM 2, so I'm VERY screwed. Makes me wish I'd played Stardew Valley or something.
When I need to concentrate I'm usually better off with no music at all. I might listen to anime/video game OSTS if there's a lot of background noise, though.
Nothing specific, I usually just listen to whatever I've been playing recently. It feels great! You really feel like you're helping the site grow! JoJo's Bizarre Adventure. Part 5, to be more specific.