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Spanish singer Massiel pictured performing on stage during the Eurovision Song Contest held at the Royal Albert Hall in London on 6th April 1968. Massiel would go on to finish first in the competition with her rendition of the song 'La, la, la'. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)

Spanish singer Massiel pictured performing on stage during the Eurovision Song Contest held at the Royal Albert Hall in London on 6th April 1968. Massiel would go on to finish first in the competition with her rendition of the song 'La, la, la'. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)