A diva's performance typically consists of a CONCERT, an ARIA, and an OPERA. A CONCERT is a live musical performance in front of an audience, usually featuring one or more soloists or small groups of musicians. An ARIA is a self-contained piece for one voice, with or without instrumental accompaniment, normally part of a larger work such as an OPERA. An OPERA is a dramatic work combining music and words, usually in the form of a story, to be performed on stage by singers and musicians.