- Mute (2), Kling Klang
Radio-Activity (German title: Radio-Aktivität) is the fifth studio album by German electronic band Kraftwerk, released in October 1975. It is a concept album organized around the theme of radio communication. To cater to the band’s international audience, all releases of the album was bilingual with lyrics in both English and German, the only localised difference being the album and track titles.
The album, aswell as the title track, were both successful in France, but Radio-Activity was not as successful elsewhere as Kraftwerk's previous album Autobahn.