I'm very glad my fingers als never leave my hands. I don't know how well they would reattach.
Fantastic playing. Too bad we don't get to see the player's face (head). I see that more and more: people posting videos where you only see their hands play on the accordion and you don't see who they are.
To me the interesting thing is that despite its appearance and sound this is a B system instrument. And while his fingers are whizzing about all over the shop his right thumb is just along for the ride.