Jürgen Udo Bockelmann, better known as Udo Jürgens, was an Austrian composer and singer of popular music whose career spanned over 50 years. He won the Eurovision Song Contest 1966 for Austria, composed close to 1,000 songs, and sold over 104 million records. In 2007, he additionally obtained Swiss citizenship. In 2010, he legally changed his name to Udo Jürgens Bockelmann.

The Eurovision Song Contest 1966 was the 11th edition of the annual Eurovision Song Contest. It took place in Luxembourg City, Luxembourg, following the country's victory at the 1965 contest with the song "Poupée de cire, poupée de son" by France Gall. Organised by the European Broadcasting Union (EBU) and host broadcaster Compagnie Luxembourgeoise de Télédiffusion (CLT), the contest was held at the Villa Louvigny on 5 March 1966 and was hosted by Luxembourgish television presenter Josiane Chen.