The Eurovision Song Contest's founding stemmed from a desire to promote cooperation between European countries in the years following the Second World War through cross-border television broadcasts, which gave rise to the founding of the European Broadcasting Union (EBU) in 1950. The EBU's general assembly agreed to the organising of the song contest in October 1955, under the initial title of the European Grand Prix, and accepted a proposal by the Swiss delegation to host the event in Lugano in the spring of 1956. Seven countries participated in the first contest, with each country represented by two songs; the only time in which multiple entries per country were permitted. The winning song was "Refrain", representing the host nation Switzerland and performed by Lys Assia.  The tradition of the winning country hosting the following year's contest, which has since become a standard feature of the event, began in 1958. By the 1960s, between 16 and 18 countries were regularly competing each year. Countries from outside the traditional boundaries of Europe began entering the contest, and countries in Western Asia and North Africa started competing in the 1970s and 1980s. Changes in Europe following the end of the Cold War saw an influx of new countries from Central and Eastern Europe applying for the first time. From 2004 the contest expanded to become a multi-programme event, with a semi-final at the 49th contest allowing all interested countries to compete each year; a second semi-final was added to each edition from 2008. Australia became the first non-EBU member country to compete following an invitation by the EBU ahead of the contest's 60th edition in 2015; initially announced as a "one-off" for the anniversary edition, the country was invited back the following year and has subsequently secured participation rights until 2023. Eurovision had been held every year until 2020, when that year's contest was cancelled in response to the COVID-19 pandemic. No competitive event was able to take place due to uncertainty caused by the spread of the virus in Europe and the various restrictions imposed by the governments of the participating countries. In its place a special broadcast, Eurovision: Europe Shine a Light, was produced by the organisers, which honoured the songs and artists that would have competed in 2020, in a non-competitive format.