Music Matters - 08/03/2008

As the Grand Union Orchestra celebrates its 25th birthday, Petroc Trelawny meets the recently formed Grand Union Youth Orchestra as they prepare for a performance in East London. Plus a review of Alex Ross's new book about 20th-century music The Rest is Noise, and miniature opera, with a look at five 15-minute chamber operas, the fruit of collaborations between Scotland's leading creative figures.