The shows from Pentagram & Kadavar on 12th June 2012 at Cologne will be streamed and recorded from the Rockpalast show of the german TV station WDR. Starting time (geman time) is 21:00h for Kadavar and 22:00h for Pentagram. There's also a chance to win tickets for the show. For more details check this site.
Update 2012-09-23: Both shows are online now and can be streamed for free, just click the links below to watch them:
If you don't know Pentagram yet, then you can check out one of their songs through the following video: