This is some weird livecast on the BBC's 1Xtra, and you can only get tickets online there and through HoustonSoReal.blogspot.com. Essentially all you have to do is send your name and email address to a particular email address which can be found on the HoustonSoReal site. That gets your name on the list, but no guarantees of admission - the first 350 people will be allowed in. It should be live - Bun B + Devin the Dude! (and more TBA)