In the eighteenth century the universal harmony of God's creation and the perfection of the unity (1:1) were philosophically, morally and devotionally significant. Ruth Tatlow employs theoretical evidence and practical demonstrations to explain how and why Bach used numbers in his published compositions.

In eighteenth-century Germany the universal harmony of God's creation and the perfection of its proportions still held philosophical, moral and devotional significance. Reproducing proportions close to the unity (1:1) across compositions could render them beautiful, perfect and even eternal. Using the principles of her groundbreaking theory of proportional parallelism and the latest source study research, Ruth Tatlow reveals how Bach used the number of bars to create numerical perfection across his published collections, and explains why he did so. The first part of the book illustrates the wide-ranging application of belief in the unity, showing how planning a well-proportioned structure was a normal compositional procedure in Bach's time. In the second part Tatlow presents practical demonstrations of this in Bach's works, illustrating the layers of proportion that appear within a movement, a work, between two works in a collection, across a collection and between collections.

In 1947 Friedrich Smend published a study claiming that J. S. Bach used a natural-order alphabet (A = 1 to Z = 24) in his works. He demonstrated that Bach incorporated significant words into his music, and provided himself with a symbolic compositional theme. Here, Dr Tatlow investigates the plausibility of Smend's claims with new evidence, challenging Smend's conclusions.

The B-minor Mass has always represented a fascinating challenge to musical scholarship. Composed over the course of Johann Sebastian Bach's life, it is considered by many to be the composer's greatest and most complex work. The fourteen essays assembled in this volume originate from the International Symposium 'Understanding Bach's B-minor mass' at which scholars from eighteen countries gathered to debate the latest topics in the field. In revised and updated form, they comprise a thorough and systematic study of Bach's Opus Ultimum, including a wide range of discussions relating to the Mass's historical background and contexts, structure and proportion, sources and editions, and the reception of the work in the late eighteenth and early nineteenth centuries. In the light of important new developments in the study of the piece, this collection demonstrates the innovation and rigour for which Bach scholarship has become known.

The Ashgate Research Companion to Johann Sebastian Bach provides an indispensable introduction to the Bach research of the past thirty-fifty years. It is not a lexicon providing information on all the major aspects of Bach's life and work, such as the Oxford Composer Companion: J. S. Bach. Nor is it an entry-level research tool aimed at those making a beginning of such studies. The valuable essays presented here are designed for the next level of Bach research and are aimed at masters and doctoral students, as well as others interested in coming to terms with the current state of Bach research. Each author covers three aspects within their specific subject area; firstly, to describe the results of research over the past thirty-fifty years, concentrating on the most significant and controversial, such as: the debate over Smend's NBA edition of the B minor Mass; Blume's conclusions with regard to Bach's religion in the wake of the 'new' chronology; Rifkin's one-to-a-vocal-part interpretation; the rediscovery of the Berlin Singakademie manuscripts in Kiev; the discovery of hitherto unknown manuscripts and documents and the re-evaluation of previously known sources. Secondly, each author provides a critical analysis of current research being undertaken that is exploring new aspects, reinterpreting earlier assumptions, and/or opening-up new methodologies. For example, Martin W. B. Jarvis has suggested that Anna Magdalena Bach composed the cello suites and contributed to other works of her husband - another controversial hypothesis, whose newly proposed forensic methodology requires investigation. On the other hand, research into Bach's knowledge of the Lutheran chorale tradition is currently underway, which is likely to shed more light on the composer's choices and usage of this tradition. Thirdly, each author identifies areas that are still in need of investigation and research.

This book a offers a multitude of provocative new perspectives on one of the most iconic composers in the Western classical tradition. Its collective rethinking of some of our most cherished narratives and deeply held beliefs about Johann Sebastian Bach will allow readers to see the man in a new light and to hear his music with new ears.