As far as I saw, the most animated in concert was Fernando Abrantes... I saw Fritz putting a laservideo on KW console at Rio's soundcheck. And during the concert, when the sound breakdown on TEE, he took a look on the consoles to see what's going on, look to the other members, just looking for the source of the problem. So I think he has a kind of "managing" work on stage. Of course all videos are automatic synchronized with the music, but probably he is responsible to manage teh videos, just in case of any problem. What a marvelous concert would be if KW put one guy to control, interact and chance the videos during it, don't you think? Florian, even being my favourite KW member, "don't do anything", because the robovox is pre recorded too. Maybe he controls the samplers too. Ralf plays some melodies, sometimes out of tune or rhythm, and Henning plays the bass line and some melodies. peace Nicolau www.kraftworld.hpg.com.br
As for Fritz well.. I can only speculate as to what each member does as I havent seen them in concert live.. only with bootleg videos, he seems more animated than the others when performing live. I dont think he operates the visuals and rythmn at the same time.. thats nigh on impossible.. From what I make out the Kraftwerk concert is almost automatic and computer controlled, with Ralf usually playing counterpoints/harmonies under the main melody. Fritz controls the tempo/control changes of the rythmn, and Henning maybe the one who takes to do with loading of samples allthough he plays the lead line of 'RadioActivity'. As for Florian.. he controls the robovox..