Karl Bartos (born 31 May 1952 in Berchtesgaden, Germany) is a German musician and composer.He was a drummer of college band The Jokers (later The Jolly Jokers in 1975 ) as Carlos Bartos, around 1965 to 1972. Between 1975 and 1991, he was, along with Wolfgang Flür, an electronic percussionist in the electronic music band Kraftwerk. He was originally recruited to play on Kraftwerk's US "Autobahn" tour. In addition to his percussion playing, Bartos was credited with songwriting on the Man-Machine, Computer World, and Electric Café albums and sang one lead vocal on the latter. Wikipedia