Speaking of Neu!, look what I just found:
http://www.bigozine2.com/archive/ARrarities06/ARkwbremen.html this is indeed a recording of the rather short-lived lineup of Kraftwerk that includes
Michael Rother and Klaus Dinger in its ranks! That's right - Neu! as part of Kraftwerk!!!
Are you still reading? Why aren't you downloading instead?! :p
It's basically a whole CD of extended "side-long" jams in the style of the first
Kraftwerk albums performed in front of a small but enthusiastic audience and broadcast
on Bremen Radio in 1971. The members of Neu! really take a forward role here, with
Rother's guitar driving things for most of the time and sounding quite rocking, with
glimpses of his future soaring melodic sound in the extended jam passages. The guitar
and drums are backed up by synth and I believe organ bass, with notable exceptions of
flute taking the forefront on the great version of Ruckzack (from the first Kraftwerk
LP) and is it distorted electric violin on K4? Maybe just Rother taking a violin bow
to his guitar strings! Proto-Kraftwerk and proto-Neu! It's exciting stuff, and on top
of that the sound quality is excellent - a professional radio recording.
How has this recording not become better known over the past 35 years since it was
made?! I don't know. It appears to be a newly released CDR edition with good-quality
(but privately printed) packaging. Maybe it has stayed in the Radio Bremen archives
until now? If you're sceptical about the authenticity I'm sure a listen will persuade
you... and hearing someone in the crowd shout "Michael!" in the last second of the
recording is the icing on the cake 8-)