David Roberts was Managing Editor on more than 20 music reference book projects at Guinness World Records including British Hit Singles & Albums and Rockopedia. In 2006 he was appointed consultant, writer and film maker to the British Music Experience visitor attraction at London's O2. He is the author of the British and Irish music locations book, Rock Atlas.
Matthew Rye is a writer and journalist who worked for many years on the staff of BBC Music Magazine and more recently at The Strad Magazine, where he is currently working freelance as a reviews editor. He is a music critic for the Daily Telegraph, writing regular reviews of CDs and concerts, and he has also contributed to a wide variety of other titles on classical music. His publications include a chapter on twentieth-century opera for the Blackwell History of Music in Britain and contributions to the Rough Guides to Classical Music and to Opera.