Binary form – Two different main sections (A B).

What form has a repeated section with two or more contrasting sections?

Compound ternary or trio form

In a trio form each section is a dance movement in binary form (two sub-sections which are each repeated) and a contrasting trio movement also in binary form with repeats.

Is Oh Susanna ternary or binary?

English: "Oh, Susannah" is an example of rounded binary form: A-B-½A.