The term you may be looking for could be operetta. While lighter and more popular in subject and style, operettas are often, but not necessarily, shorter in duration than the more classic operas.
An 'aria'
Intermezzo
Yes the word opera is a noun. An opera is a theatrical piece of work combining music and drama.
The lyrics of an opera are called the "libretto."
In almost every language it is called opera.
An 'aria'
An 'aria'
It's called an "overture." It's usually not too long, and there's no singing.
Intermezzo
A short light opera is called a operetta. It typically features a humorous or lighthearted storyline and includes spoken dialogue along with musical numbers. Operettas were popular in the 19th and early 20th centuries.
In opera it would be called an overture. Overtures are routinely made up of a selection of the music that makes up the opera. In other pieces of music it might simply be called an introduction.
In an opera, the beginning of an orchestral piece is called an overture. Other orchestral performances don't have a special name for the beginning.
An overture is a fairly short piece of music used to introduce an opera. Overtures have also been written to be played as part of concerts.
It's called an 'aria'..........aria n. A solo vocal piece with instrumental accompaniment, as in an Opera. Anair; a melody.
An extract
A short piece of music played in honor of a person or event is call a "Baroque".
Mixing a short piece of another song into a new one is called sampling.