A Fanfare is a flourish of trumpets or other brass instruments often with percussion accompaniment. It is a kind of announcement or introduction to an important event or ceremony of significance such as the King's entrance or other dignitary..
In simple terms, Opera is a musical theatrical drama in which the actors are singers. The majority of acting parts will be sung as opposed to spoken as in a play. Opera has been famously loved for centuries for its wealth of style..
The Overture is an introduction into a more dramatic musical performance such as an opera or ballet. Some overtures are used in concert as a complete stand alone composition. Early overtures began with a fast moving style..