Eurovision favourite has a secret weapon other acts can’t bank on

Delta Goodrem is gearing up to represent Australia in the Eurovision Song Contest in Vienna next week (Picture: AP/ Getty)

Competing in the Eurovision Song Contest has allowed a string of acts to launch successful careers, but Delta Goodrem is one of a handful to already have a huge international profile.

The Australian singer-songwriter was just 15 years old when she signed a recording contract with Sony Music, with her debut album Innocent Eyes then topping charts. In the UK it reached number nine and it still holds the title as one of the highest-...