 Not until the 1970s did the song books uniformly settle upon the version cited in the introduction.The main reason for this is most certainly the standardizing effect of mass media, in this case the Schlager-inflected recording sung by the trio Medium-Terzett, which hit the German charts in 1968 and was then broadcast on television and radio countless times.The basic tunes noted above have been in use virtually since the very first records.