A compound ternary form (or trio form) similarly involves an ABA pattern, but each section is itself either in binary (two sub-sections which may be repeated) or (simple) ternary form.
En sammensat form (eller trioform) involverer tilsvarende et ABA-mønster, men hver sektion er i sig selv enten i binær (to underafsnit, der kan gentages) eller (simpel) tredelt form.