Amanda Palmer and Richard O'Brien do the "Time Warp" in London

You know how sometimes you’ll wake up in the morning, and then kick yourself for not blowing $2,600 on a standby ticket to the U.K. to catch that Amanda Palmer show at KOKO in London. The worst thing being that your spidey sense was telling you to just bite the bullet and pony up the cash because something magical seemed likely to happen.

Well, this is one of those mornings.

Watch as Palmer invites a very special guest on-stage to perform “Time Warp” for a crowd that knows every single word of the song. If you’ve ever been to a midnight screening of The Rocky Horror Picture Show, you’ll know the song’s writer, Richard O’Brien, better as Riff Raff, whose hairdo in the cult flick remains an inspiration to millions of follicle-challenged middle-aged-men across the globe.