The scene where Hans Peter is watching Television is set in the early 1970s. The Disco (1971)-episode he is watching is from the 27.11.1978, as Ilja Richter was announcing Baccara with "The Devil Sent You to Loredo". Hape Kerkeling was already 13 years old back then.
In a scene in 1973 Hans Peter is singing "Spaniens Gitarren" by Cindy & Bert, a song that was released in 1974.