The work is in three
movements: A typical performance will last around 17 minutes. While Piston disowned any specific programmatic intentions, he did not object if others made their own associations. The movement titles, he said, were the subjects that prompted me to compose. I did not intend to openly suggest the subject matter, but a man came up to me, following the premiere, and said, "I hope you don't mind my saying that I smelled clams during the first movement." I said, "No, that is quite all right. They are
your clams." Each individual is free to interpret as he wishes. The first two movements (both of which are loose
binary forms) are especially evocative with, for example, "amazingly life-like" bird and insect chirps and buzzes in "Summer Evening". The last movement, "Mountains", is—appropriate to its title—in an arched
ABCBA form in which the sections are differentiated by tempo and expressive character:
A is "Maestoso" and monumental,
B is "Risoluto" and lively, and
C is "Meno mosso" and atmospheric. ==References==