It is not a bad thing both opening and closing a festival with a massive chant to a veritable heavy metal classic such as Balls To The Wall, let me tell you. Not a bad thing at all.
Skyline opened the festival with Udo Dirkschneider on guest vocals where he sang among others the aforementioned song to a very appreciative crowd, and when he, with his own band acting as the last act of the festival, closed things down with the very same song people were just as enthusiastic as the first time, if not more.

I didn’t check the time, but it was somewhere between half past one and two at night that U.D.O. took the True Metal Stage by force. It was impressive to see the energy the band contained, even with the late hour; and it was equally impressive to see the amount of people who defied the weariness their bodies certainly must have felt at the time. Possibly a bit of beer helped, but I’m sure the music did as much or more even to keep everyone’s spirit flying high into the night sky. There it soared along with the voices of those singing along to every word the short but powerful man sang.
Arms were raised, heads were banged and broken voices shouted their appreciation long into the small hours of the night.

Tiamat had just given a damn near perfect version of how to end a festival only minutes earlier, but when all is said and done, there was nothing at all wrong with U.D.O.’s very different, but equally effective, bid on how to get the job done. It was loud, rude and very, very metal.