I haver never seen this before
http://www.youtube.com/watch?v=Hkrv0Q11tWM
Einstürzende Neubauten - Kollaps
live at the Festival Genialer Dilettanten 1981
and this is interesting aswell
http://www.youtube.com/watch?v=2Exp63Lo4QQ
Sentimentale Jugend (16 years old Alexander Hacke + Christiane F. )
same festival