Aria

In music, an aria (Italian: [ˈaːrja]; plural: arie [ˈaːrje], or arias in common usage, diminutive form arietta [aˈrjetta], plural ariette, or in English simply air) is a self-contained piece for one voice, with or without instrumental or orchestral accompaniment, normally part of a larger work.

The typical context for arias is opera, but vocal arias also feature in oratorios and cantatas, or they can be stand-alone concert arias. The term was originally used to refer to any expressive melody, usually, but not always, performed by a singer.