Well, to be fair, I’m not a musician so I am not the best person to ask, but it is definitely a technique that is taught to musicians.
Obviously I can’t really know for sure, but my best guess is that it is a combination of a singing technique and some lingering insecurities.
When a singer is singing a high note, they will often pull the microphone away from their mouth a little bit to risk being too loud if that makes any sense at all? Timing is important for this, and sometimes I think he pulls back a little prematurely. His voice is very unique and actually quite powerful and in certain instances that I can’t recall (because my memory is shit), can be heard well above the others.
I’m sure this is in response to my post about him singing No Control. One of the reasons that I love that song so much is because it does such a great job of showcasing his voice and I fully stand behind wanting him to sing it balls out on stage. I think this song is actually at the top of my wishlist for the next leg of the tour!!!