What is a 3 part aria?

An aria in three parts typically follows the structure of an ABA or da capo form. This consists of an initial section (A) which is followed by a contrasting middle section (B) and then concludes with a return to the initial material (A). Each section may vary in length and complexity depending on the specific composition. For example, the A section might introduce the main theme of the aria, while the B section provides a contrasting emotional expression or shift in mood. The A section then returns to bring the aria to a cohesive close.