Eurovision controversies: From starting a revolution to forgetting lines [Video]

The Eurovision Song Contest is primarily a competition for the best track but has been dogged by controversies since its inception in 1956.

The competition has been caught up in politics, voting issues and boycotts throughout the more than 60 years.

Here is a round-up of the strangest and most contentious moments:

– Winner forgets her lines

Among the first countries competing were Germany, France, Luxembourg, Italy, Netherlands, Switzerland and Belgium, with Austria and Denmark not being able to enter in time and the UK deciding not to take part.

Held in Lugano, Switzerland, host country singer Lys Assia won with the song Refrain.

She went on to forget her lines when asked for a repeat performance.

– Norwegian jury changes its vote

In 1963, the UK hosted the contest in London as France did not want to as it had already held it twice in previous years.

The Norwegian jury first gave …