Just to give you prep time, Daniel Johnston, patron saint of all things weird, musical, and Austin, and songwriting darling of many worldwide, (check out the lineup on the Discovered Covered tribute album, it’s remarkable) will perform his only 2010 Austin show next Saturday the 19th at the Mohawk, in the company of Jason Falkner, Brackett & Co., and The Sour Notes. All his friends are vampires.