Pre-game is usually about food and getting everyone comfortable.I play on multiple tables. I'm curious how you all transition from pre-game to in-game.
On one table, the pre-game chit-chat is usually about the campaign. The game starts as soon as the DM has set up his things (we are always a few minutes early). We know the game has started once the DM joins in the conversation, and usually confirms or corrects some of our summaries on what happened previous session.
On another table, people really catch up on life in general. The pre-game chit-chat is never about D&D. And as the DM I really have to check in with people if they are ready to start, as I don't want to be rude and interrupt a conversation. It can be a little frustrating because my mind is on the game already. But the players are all busy people with busy jobs and they don't need more rules in their lives. Luckily, once we start, the game does not get interrupted a lot for off-topic chats, so I guess it's necessary to get the other topics out of the way.
How does it go at your table?
I used to do that with a YouTube playlist of the tavern music from DDO."When we last we saw our intrepid band..." [brief recap, solicit recap/recollections from players]
At home this may be accompanied by putting on some adventuresome music.
There was a great pastoral traveling music track on YouTube I used to routinely have on in the background as the players arrived, we set up and chit-chatted, but sadly it seems to be unavailable now. I should find a replacement.
DDO had some good music to use in game sessions. I have also taken to using "The Salty Wench" and "The One ear, one Eye, Bugbear Inn" as tavern names.I used to do that with a YouTube playlist of the tavern music from DDO.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.