Bar Refaeli, Erez Tal, Assi Azar and Lucy Ayoub host the 64th Eurovision Song Contest in Tel Aviv, Israel, with live commentary from Marty Whelan, marking the 21st year he has provided the voiceover for RTÉ. Six countries are already through to the final - the Big Five of Spain, the UK, France, Italy and Germany as well as the host country Israel - but they will face stiff competition from the remaining countries who battled to make it through the semi-final stages. Fingers crossed, Ireland will be one of the final 26, with Sarah McLagan and her song 22. If so, she will be aiming to win an eighth time for Ireland. Eurovision was established in 1956 and has taken place annually ever since. What started as an experiment followed primarily by a radio audience grew to become the world's longest-running and most popular music competition, attracting viewing figures of almost 200 million people around the world.