The subject of the book is the religious considerations, both philosophical and didactic, and the artistry enabling them, in the cantatas of Johann Sebastian Bach.
It is written bearing mind the point of view of the congregant, who, though not musically literate, would have been intimately familiar with the religious context, and with how this context informed the daily life of the citizenry.
To indicate the framework of the faith that Bach draws from I discuss the cantatas within their position in and contribution to the ecclesiastical year, which commences with the first Sunday after Trinity. I therefore include the pertinent text of the prescribed Biblical readings of the gospel and epistle for each Sunday and feast day.
The book is designed for the reader who is not necessarily a trained musician, in keeping with the composition of the audience that Bach spoke to through his music. I include commentary on the structure and nature of the music, especially the effect of each of the constituent sections of each cantata.
The perspective offered to the reader is, of course, mine.