Spurred on by a post in which Rowuk was talking about breathing, and keeping the mind out of the way, I wondered how many of us have experienced a "transcendent" state whilst playing? By that I don't mean that your long suffering partner hit you over the head with a skillet for playing those high notes too many times! More that you are so in tune (excuse the pun) with what the group is doing, you don't need to think, you just play.
For example (and the only one I have actually) - I was 16, playing 2nd trumpet in our high school Jazz band, and I instinctively knew what the 1st trumpeter was about to play while he improvised, so much so that I could have played alongside his solo. I didn't, because it was his solo, and you NEVER piss off a trumpet player haha!
I figure that small groups might approach the same state of like-mindedness, if you want to put it that way, but has anyone experienced it?