The publication contains a book with a full analysis of the Ciaccona BWV 1004 by Johann Sebastian Bach, together with a CD recording and a roll of sheet music. The book investigates the anatomy of the structure of the Ciaccona based on 64 variations, exploring the essential context of its external and internal forms and proportions.

This publication is unique not only because it is the first complete and fruitful analysis of this very famous piece worldwide. Besides the detailed analysis, the study reveals a hidden special code, that have been undiscovered for 297 years. The authors are both professors of the Ferenc Liszt Academy of Music in Budapest, Barnabás Dukay is a composer and musicologist, Márta Ábrahám is a violinist.

This educational material is highly recommended for violin, viola, cello and guitar players, organists, composers, musicologists. An indispensable tool for teachers and students, and for everyone who is interested and curious to learn about the art of Johann Sebastian Bach. The book gives answers to theoretical as well as performing-practice questions.