The 1957 Eurovision Song Contest was hosted by the Hessischer Rundfunk on behalf of Deutsches Fernsehen ARD. Austria, Denmark and the United Kingdom entered the contest for the first time, joining the other seven participating countries from the previous year. Despite the fact that an increasing number of Europeans had access to television, the contest was still mainly a radio programme at this time. In a change to the contest the year before, duos were allowed into the competition. Danish duo Birthe Wilke and Gustav Winckler shocked the audience with their passionate on-screen kiss, the longest in the history of the contest. Germany's entry, performed by Margot Hielscher featured a telephone during the performance, the first gimmick to appear at the Eurovision Song Contest.