 Complete the following phrase:  The national final was held on 25 February at the Kurtheater in Bad Homburg vor der Höhe, hosted by Heinz Schenk. Thirteen songs took part, with the winner being decided by a 21-member jury. It is not known by what method the songs were scored, and only the top four placements are currently known. One of the other participants was Christa Williams, who had represented Switzerland at Eurovision in 