Festsaal der Wiener Hofburg in Vienna, Austria. Denmark withdraw from this contest, reducing the number of competing countries to 17. The scoring system last used in 1961, with ten members casting a single vote for their favourite, was reintroduced, with at least half of the jury members in each country required to be less than 30 years old. A number of other innovations introduced for the first time at this contest, such as shots of the green room during the voting process and each country's broadcaster appointing an official representative, have since become integral parts of the present-day contest. The United Kingdom's Sandie Shaw won the contest with "Puppet on a String" in a landslide victory, with the UK gaining more than twice as many votes as the runner-up Ireland to gain its first Eurovision title. The Eurovision Song Contest 1968 was the thirteenth edition of the contest, organised by the BBC and held on 6 April 1968 at the Royal Albert Hall in London, United Kingdom. This was the first edition of the contest to be produced in colour. A tight voting sequence saw Spain and the United Kingdom vie for first place by the end, with the votes of the final juries being decisive in favour of Spain's Massiel by just one vote. Joan Manuel Serrat had originally been announced as the Spanish representative, but when he wanted to sing in Catalan, Spain's dictator Francisco Franco demanded that he perform "La, la, la" in Castillian, resulting in his replacement by Massiel. A Spanish documentary in 2008 claimed that, in an attempt to avoid civil unrest seen in other parts of Europe and to boost Spain's standing globally, Franco had ordered agents to attempt to manipulate the votes of the other countries' juries to secure a Spanish win at the contest. The documentary goes on to suggest that the United Kingdom's Cliff Richard, who had been tipped for victory before the contest with "Congratulations", should have been the winner. However the effectiveness of any potential bribery has been disputed, and others, including Massiel, have accused the documentary creators and broadcaster of manufacturing the scandal. The Eurovision Song Contest 1969 was the fourteenth edition of the contest, organised by Televisión Española (TVE) and held on 29 March 1969 at the Teatro Real in Madrid, Spain. 16 countries entered this year's contest, with Austria refusing to take part due to the