The Penguin Guide to Recorded Classical Music (formerly The Penguin Guide to Compact Discs and, from 2002 to 2006, The Penguin Guide to Compact Discs and DVDs) was a widely distributed annual publication from Britain published by Penguin Books that reviewed and rated currently available recordings of classical music. It was written by Ivan March, a music journalist, consultant and former professional musician; Edward Greenfield, music critic of The Guardian and Robert Layton, music writer and lecturer. All three were also reviewers for the UK classical music monthly Gramophone. From 2002, a fourth contributor, Paul Czajkowski, was credited, first as assistant editor and then as co-author.