What is the etiquette when it comes to applauding at concerts? Mozart approved when a Paris audience clapped while his music was in progress. In Indian classical music and in flamenco, expressing approval during the music - at the right moment - is fine. And at pop concerts, anythinggoes. Pianist and broadcaster David Owen Norris examines how styles and traditions of applause have developed down the centuries and in different cultures, and speculates on the future of showing appreciation. Producer Andrew Green
Mind and body: page 30