Disco was a pop music program that aired in Germany on the ZDF network from 1971 to 1982. It generally aired on the first Saturday of each month at 7:30PM, each show running 45 minutes. 133 shows were produced. The show was hosted by German actor and comedian Ilja Richter. Its lesser known predecessor on ZDF, 4-3-2-1 Hot & Sweet was aired between 1966 and 1970; presenters included Ilja Richter and Suzanne Doucet. Disco generally served a younger pop-oriented audience compared to ZDF's Hitparade, and until 1972, its main competitor was Beat-Club (originally patterned after the pure live-act show Ready Steady Go! in the UK, from the late-1960s turning more and more into psychedelic music videos made especially for the invited acts), followed by Musikladen, both on ARD.
The show focused on chart hits current at the time of airing, giving about equal airtime to international pop music and German Schlager. Despite its name, it did not particularly focus on disco music although it featured many disco hits as long as they were chart relevant. (The name of the show was devised before disco as a musical style existed).
Note: I have 131 episodes of this show on 47 DVDs (133 episodes were broadcast, but the two missing episodes were only "best of" compilations).