HONG KONG, April 21 -- When Coldplay lit up Hong Kong's brand-new Kai Tak Stadium for four nights this month, the music didn't just thrill fans - it also struck a chord with the local economy, pumping an estimated HK$1.2 billion (RM680 million) into the city.

Speaking to South China Morning Post (SCMP), Polytechnic University's Professor Haiyan Song said the HK$1.2 billion figure is based on estimated audience size, average tourist spending, and ticket prices.

It's a substantial slice of the city's annual HK$260 billion tourist income, generated in just four nights.

Coldplay's sold-out gigs on April 8, 9, 11, and 12 also marked a milestone: the band was the first to perform at the HK$30 billion Kai Tak Sports Park's 50,000-seat stadium...