More than 70 years have passed since the death of Louis Vierne, the last great French organ composer of the late romantic period. This is good reason for publishing a complete edition of his organ works, with the purpose of providing a musical text as accurate and authentic as possible. The intention is to correct obvious misprints from the first editions, to provide commentary on questionable passages and offer alternative solutions. It is based on the first editions and the composer's manuscripts where available, and on lists of corrections from colleagues, pupils and present-day interpreters closely concerned with Vierne's music. All decisions and corrections on the part of the editors will be documented and substantiated in accordance with modern principles and methods of scholarly editions.