The author has consulted all the standard authorities, but has followed none … and has gone to the works of the great composers themselves, has carefully analyzed and examined them, and from their practice has deduced his rules.from the author's preface
Gives very deep knowledge of the fugue. The explanations sometimes are very old-fashion. Reader can easily lost in details. Despite this weakness the material is well-structured. Contains deep fugue analysis and "school fugues" written directly for pedagogical purposes, based on student can easipy write his/her own fugues.