One of our faves, Grouplove, was the musical guest on CONAN on Monday night. Check out Hannah, Christian and the and doing "Remember That Night," and then ending the performance with a nod to Tom Petty, working in a bit of "I Won't Back Down." (starting at the 2:52 mark)
Also, notice the message painted across the set : Our Hearts Are With You Las Vegas.
It was a tough day Monday and I think they handled it wonderfully.