Looking for messages from this year’s Eurovision? Maybe the best one is simply a Churchillian ‘never give up’. Portugal won, after 53 years of trying. Another one is ‘be true to yourself’: Salvador – and Luisa – Sobral did it their way. Eurovision winners usually do this: look through the list, and you usually see artists being original, not following a formula. The winning song, a gentle, jazzy ballad sung, without big presentation, by a bohemian-looking solo singer (also,