It’s a country of little more than 10 million people but when it comes to pop music, Sweden punches far above its weight. Taylor Swift, The Weeknd, Coldplay and countless other international stars have had some of their biggest hits produced and written by Swedish artists. The Nordic nation is the third-largest exporter of pop music in the world, after the US and the UK. But musicians in Sweden are worried that the country’s changing political climate could endanger this great Swedish success story. The World’s Europe correspondent Orla Barry reports from Stockholm.