In this Wednesday, June 6, 2018 file photo, German astronaut Alexander Gerst, crew member of the mission to the International Space Station, ISS, waves as he boards prior to the launch at the Russian leased Baikonur cosmodrome, Kazakhstan. Video posted Saturday, July 21, by the European Space Agency shows German astronaut Alexander Gerst ‘dropping in’ for a live performance with German electronic music pioneers Kraftwerk from the International Space Station. Gerst played a duet of Kraftwerk’s 1978 song “Spacelab” with the band Friday night to cheers from the audience. (AP Photo/Dmitri Lovetsky, file)
BERLIN — Kraftwerk fans are used to hearing otherworldly tunes, but the German electronic music pioneers took it to another level at a gig in Stuttgart.