I'm replying to my own post, but rewatching that video, I found it very interesting the way Trym handles the snare drum when doing the super fast blast beats at the start and the end, he rests his wrist on his knee so it rises up and down in time with his left foot keeping perfect time for the snare hits.
Dummers amaze me, I don't know how anyone can have such perfect coordination of all 4 limbs at the same time. I have trouble walking sometimes
