LONDON (Reuters) - German electronic music pioneers Kraftwerk have always aimed to combine music and art so performing at London's Tate Modern was the ideal venue for them after three years of planning. Kraftwerk took over the 800-capacity Turbine Hall at the art gallery on Wednesday to play the first of eight consecutive shows, each focused on a different album, starting with "Autobahn" from 1974 and ending with "Tour de France" from 2003. ...