Thank you for capturing this small private moment which is invisible to most people. One of the moments when reality crashes in, I think. He stated himself that when he plays on stage, it's like he enters a different world where he can just shut away everything else and let all the things out he needs to let out. Moments like this one here(yes, I always stood in a position to notice such moments myself....) really show that. It's the short moment of waking up for a break of realizing what's just happening. A halt at a station before jumping on the train again and continuing the ride. Thank you!