Petroc Trelawny sets out to measure the passion and impact of the new global enthusiasm for western classical music. It is an enthusiasm that has been reflected in this year's BBC Proms with visiting orchestras from Qatar, China, Singapore, South Korea, Turkey and Brazil.

Is this just an attempt by nations with new wealth and a burgeoning middle-class to buy their way to the international cultural top table, or will this new enthusiasm last and have an impact on places where classical music has few if any roots?

The statistics are often jaw-dropping. Massive new concert halls across China, educational systems in South America and India and millions of children learning western instruments. The fact that 30 million Chinese students are currently studying the piano speaks of a fundamental new development in a musical tradition that was once firmly anchored in the West

In the first programme, Petroc looks at the wave of new building projects under way, particularly in China. Massive concert halls designed by award-winning international architects are a bold statement of intent and they have certainly raised the profile of China's performance ambitions. The question now is how they are going to be filled and why do they continue to be planned and built with such extraordinary zeal when the audiences who might attend remain tentative about what is, to all intents and purposes, an alien culture. Is it enough to believe that 'if you build it, they will come?'

Petroc centres his exploration on Zaha Hadid's iconic Opera House in Guangzhou and also hears from leading cultural figures in India, South America and the Middle East where the story shares universal challenges but with very particular local dimensions. Show less