"The problem with GnR is that they suck. The songs suck. Even when they were in their prime they sucked. Remnants of an era of misogynistic sunset strip garbage. Bros who dressed like girls but still acted like high school jocks.
Neither Chromeo at the barn or Skrillex on Kalidescope surprise me. Really smart moves. It was an obvious horrible marketing move to promote either without at least once busting out some serious talent for the venue. Very cool way to spread surprise, intrigue and mystery around the farm. I really love it!