ELEMENTS OF SONATA THEORY:
Norms, Types, and Deformations in the Late-Eighteenth Century Sonata
James Hepokoski & Warren Darcy
Copyright (c) 2006 by Oxford University Press
ISBN-13:978-0-19-977391-6
CLASSICAL FORM:
A Theory of Formal Functions for the Instrumental Music of Haydn, Mozart, and Beethoven
William E. Caplin
Copyright (c) 1998 by Oxford University Press
ISBN 978-0-19-510480-6
ISBN 978-0-19-514399-7
Five years ago, when I was blogging about "
an overview of structural concerns in the sonata forms of Sor, Giuliani, and Diabelli" I was unfamiliar with either of these books or their authors. I only discovered these two books in the last year thanks to a couple of doctoral dissertations on the guitar sonatas of Sor (and Giuliani, in one of the cases) that can be read over here:
https://arizona.openrepository.com/arizona/bitstream/10150/268374/1/azu_etd_12490_sip1_m.pdf
http://scholarlyrepository.miami.edu/cgi/viewcontent.cgi?article=1889&context=oa_dissertations
The two books are treasure troves of study for 18th century sonata forms and they have different strengths and weaknesses. The strength of the Caplin book is that Caplin explored each level of formal development in a sonata form; whether it's the four to eight-measure sentence or period, or compound thematic modules at the lower level; or ranging up to the highest intra-movement and multi-movement cyclical patterns. The weakness is that such a general survey of music can skip over interesting details such as variants of forms.