From the Ustream blurb:
Beginning at 23:30 on Saturday May 16th and through 4:00 Monday May 18th, Gonzales will attempt to break the Guiness World Record for longest concert by a solo artist. The previous record is 26 hours and 12 minutes and was performed by Prasanna Gudi (India) at the Mallikarjun Mansoor Kala Bhavan public auditorium, Dharwad, Karnataka, India from 28 to 29 December 2008.
Gonzales explains his motivation: "I will do this to push my muscial and physical stamina. I believe music is part art, part athletics and this 27-hour concert will demonstrate both aspects."
It's a remarkable event to be part of, and not something that mainstream TV is likely to dedicate over a day of broadcasting to: once again, a win for the web and its social broadcasting tools.
More Ustream news can be found in our Ustream section.