Picking amongst the eight zillion happenings upcoming for SXSW, this one stands out right away: The Octopus Project will debut their "immersion experience" Hexadecagon for FREE on the Whole Foods rooftop, Friday, March 19th, 7:30 and 9:00 PM. Three of the best SXSW words apply here: No wristband necessary. What in the sweet beyond is Hexadecagon? In their own words: "The eight speakers will be set up in a circle surrounding the audience, who will in turn be surrounding us (the band), set up in the middle of the whole shebang with eight images projected overhead. With this setup in mind, we can send all or part of the music spinning around in a circle or jumping from point to point across the space, or put completely different elements in each speaker, putting you and us in the middle of a crazy array of sounds." There you have it; all I can say is I plan to be there.