Watch the Jonas Brothers 'Burnin' Up' 'FNMTV'

Hot out the production truck! It's the Jonas Brothers' exclusive performance of "Burnin' Up'" from tonight's episode of FNMTV.

And check out the video of their FNMTV opening scene, see JB secrets revealed, get more Jonas moments from the show, and watch Pete Wentz bond with a Moonman over Nick Jonas.

+ Plus: JB photo madness -- check out photos of the performance, tons of backstage snaps with Pete Wentz and more FNMTV guests, and more photos of the Jonas Brothers/FNMTV (Best of Both Worlds II?) Experience.