The descriptive note comes from item 1490 in :
Diamond, Harold J.
An annotated guide to the literature
New York: Schirmer Books, 1991, 716 p.
This is what Harold J. Diamond had to say:
Introduction to the libretto and the music. Includes analytic comments on harmony and.tonality.
© Harold J. Diamond
(c) 2013. Frank Greene. All rights reserved.