This is an unreleased broadcast recorded about six months before they made their only LP on the now defunct DDR label Amiga. Wether the LP will ever be reissued remains doubtful at least.
You'll find it here:
Enjoy Hans Reichel and his comrade-in-music looking outside...
BERGISCH-BRANDENBURGISCHES QUARTET "KÖLN, 1981"
Ernst-Ludwig Petrowsky, alto & baritone saxophone, clarinet, harmonica
Rüdiger Carl, tenor saxophone, clarinet, accordion
Hans Reichel, guitar, violin
Sven-Ake Johansson, drums, percussion, vocal
1. Unknown Title 06:54
2. Unknown Title 07:55
3. Unknown Title 06:09
4. Unknown Title 06:57
5. Unknown Title 09:21
Recorded on September 29, 1981 at the WDR Studio 2, Annostrasse, Köln, Germany.