First time I heard Brotzmann was back in the summer of 1966 when he appeared with Han Bennink and Peter Kowald at the Comblain jazz festival in Belgium.
One of the first concert appearances from the trio.
To be honest, Brotzmann was not the reason I traveled to Comblain. The festival headliners were Benny Goodman, Stan Getz, Anita O'Day, Paul Bley, Barney Wilen and others.
Been a fan since and I have a couple dozen albums. Listen to them via headphones (my wife can stand Ayler but not Brotzmann!).