Here's a cool 1971 performance of Kraftwerk on Beat Club. This short-lived long-haired lineup included Florian Schneider, who passed away last week, the late Klaus Dinger (Neu!), and Michael Rother (Neu! and Harmonia).
And here is Michael Rother's eulogy to Schneider in Uncut.
"Florian had a unique metal construction onstage on which he assembled his effect units and a mixer. He played an electrified violin which he ran through a fuzz box and a wah-wah pedal, and a flute which he treated with delay and a unit that changed the pitch to one octave down. Especially this flute, and the way Florian played it like a crazy fast-forward bass, was thoroughly exciting and unheard before. Unfortunately, the sound engineers who did the recordings at Beat Club (TV) and Radio Bremen didn't understand that Florian's contributions to our sound were much more interesting and vital than my guitar playing, and so they put Florian too low in the audio mix.
"The trio with Florian, Klaus Dinger on drums and myself on guitar only lasted for 5 or 6 months but I remember some truly exciting concerts, and everything that followed in my musical life had a connection to this beginning with Ralf and Florian. After we separated in July 1971, Klaus and I continued as a duo (Neu!) and Florian got back together with Ralf Hütter.
And here's an even earlier 1970 lineup with Schneider, Dinger, and Ralf Hütter.