I saw Caspar on his own a few times and it is pretty insane. Then I saw him with his Dad (Saxophonist Peter Brotzmann) and everything was much clearer. great poster for the night. Killdozer are another favorite.
This would have been loud.
When I last saw Caspar Brotzmann the dude had three full marshall stacks... In Lounge Ax, which was maybe 20' wide and 100' long.
He also wore a puffy white Edwardian shirt unbuttoned to the navel, and a giant gold medallion hanging on his hairy chest. And leather pants. So German!