Gaia, a collaborative project between Armin Van Buuren and Rank 1, is an absolute must-see event for every trance fan whenever they are lucky enough to see it live at a major festival. They both wear a heavy hooded costume and there is virtually no fan interaction whatsoever for the entirety of the set. The focus during a Gaia set is always on the music, and that's the way it should be. If you like hard pounding trance without the gimmicks, then watching Gaia perform is a no brainer.