Christopher Cook visits the largest piano factory in China, where pianos pour off assembly lines like motor cars. What is the continuing appeal of this most western of musical instruments? And will they ever build the opera house in Beijing described by its critics as "a giant egg floating in a puddle"? Who really wants western opera in China? Also, policing the pirates in a country where 90 per cent of all the pre-recorded music sold is on pirated CDs and tapes. Producers Radek Boschetty and Rachel Hopkin