Hello from a newbie (to drumming and the forum).
I recently went to a drum clinic given by Alan White, and during one of his demonstration solos he closed his eyes and you could tell he was just sort of *gone*. The solo (awesome!) went on for several minutes. When he finally ended, he opened his eyes, looked rather surprised, and said, "Oh, sorry. I kind of went away for a couple of minutesand forgot you all were here!"

As a beginning drummer, I have to concentrate too hard on what I'm doing to space out, but I look forward to the day when it works for me!