Every theme we have studied (or composed) so far has been eight measures long. Today we will examine a more complex structure, which typically occupies at least twice that length: the small ternary.

If we arbitrarily take an eight-measure theme to equal one thematic unit, then we can say that the small ternary is composed of three thematic units. This is not to say that each unit of the small ternary is eight measures in length; it is to say that the form comprises three self-contained sections, each of which performs a specific function within the larger whole...

ANDREW SCHARTMANN'S MUSICAL TIDBITS