Kraftwerk is an electronic music band from Düsseldorf, Germany. The signature Kraftwerk sound combines driving, repetitive rhythms with catchy melodies, mainly following a Western classical style of harmony, with a minimalistic and strictly electronic instrumentation. The group's simplified lyrics are at times sung through a vocoder or generated by computer-speech software. Kraftwerk were one of the first groups to popularize electronic music. In the 1970s and early 1980s, Kraftwerk's distinctive sound was revolutionary, and has had a lasting effect across many genres of modern music.
In short...they rule...see for your self: http://www.youtube.com/watch?v=zZt64_XOflk