Given the title, looking at this reminds me of light shows in, for example, theatres. tklemz is quite right about the flow - the very light here seems to be flowing, dancing, playing... playing for itself and for an audience, playing with itself and with an audience...
What does it say to you? What illusions, what fantasies, what dreams and nightmares do the audience see in this? Who does it reach, how and why?
One almost gets the sense the light itself has intentions, a design, a plan... This maybe like a show in a theatre, but it is no ordinary show. There is no electronic gimmickry here. A director, perhaps, a script writer, maybe, but technicians need not apply. Only actors on the stage and the only actor(s) is(are) the light itself...
I really like the way this seems so light and flowing.
The also really like the colors used.