The descriptive note comes from item 4229 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:
A brief introduction to the piano works. General description, with some analytic observations about each group of pieces.
© Harold J. Diamond
(c) 2021. Frank Greene. All rights reserved.