V. FORM OF HAYDN'S ADAGIO.

This Adagio of Haydn is a good illustration of what we have called "sectional form." It may be tabulated as follows:

TABULAR VIEW OF SECTIONS IN HAYDN'S ADAGIO.

1234
Section in E-flat
measures 1-16		Section in the
dominant (B-flat) 16-30		Section of free
modulation 30-54		Double Section
in E-flat 55-82
Coda 83-91
DualityDualityPluralityUnity

Section four contains practically the same material as Sections 1 and 2, with its last half in the tonic instead of the dominant. It will be observed that the harmonic plan of the movement is that of "sonata-form," but that the first two sections (which would constitute the exposition) are not repeated, as was the invariable custom in Haydn's first movements. Yet the resemblance is quite close, for the third part is like a development section and the fourth like a restatement. Still there is not here that decided difference between the three sections of exposition, development, and recapitulation that is essential to sonata-form.