“By now Mr. Hütter is used to Kraftwerk being acknowledged as a prototype. Its riffs are foundations of songs by performers from the rapper Afrika Bambaataa to Coldplay. ‘We’re not so interested in possession. We are more interested in participating,’ Mr. Hütter said. ‘We’re sending out. Certain of these ideas are radio waves. We’re the antenna catching information, the transmitter giving information, back and forth.'”