From 1964 up until 1975, an artist would be chosen by the BBC, and that artist would sing all six songs (five in 1966 and 1967) in the selection, and the public (bar 1964 and 1971) would choose by postcard which song they would like to represent them in the contest. Regional juries selected the winner in 1964. A postal strike in 1971 prevented the ballot from taking place, so regional juries were once again constructed to pick the winner. In 1972, national power cuts meant that the broadcast of the show was blacked out in many areas, leading to a much lower postal vote. In its early days of this format, only "light entertainment" singers were used, such as Kenneth McKellar and Kathy Kirby. However, the poor showing of McKellar in Luxembourg (he placed 9th of 18 entries with scores from only 2 countries, including top marks from Ireland) prompted the BBC to use more mainstream pop stars, which led to a run of successful results for the UK. This idea was dropped due to the low number of postal votes cast in the contest of 1975, in which all six songs were performed by The Shadows, and after objections from songwriters who felt The Shadows, and the BBC's selections in general, were not the sort of artists they wanted to represent their music.