Improvisation in music involves creating and playing new music in the moment using available instruments and listening skills. Theatre improvisation is playing dramatic scenes without a written script and predetermined activity, such as actors performing without one. Examples of improvisation include unscripted comedy performances where dialogue, action, and characters are created in the moment by players, as well as flash mobs that assemble suddenly in public to perform briefly for entertainment before dispersing.

1. Sound Improvisation
To improvise is to make up something on the spot.
Improvisation in music is the act of creating and
playing new music without preparing it in
advance. It involves creatively using the available
resources at hand, such as musical instruments and
your listening skills to compose music spontaneously.

3. Theatre Improvisation
The definition of improvisation is the act of coming
up with something on the spot. Improvisation, in
theatre, the playing of dramatic scenes without
written dialogue and with minimal or no
predetermined dramatic activity. The method has
been used for different purposes in theatrical history.
An example of improvisation is a set of actors
performing without a script.

4. Examples
Performances that are unscripted. For example, a
comedy performance with dialogue, action, story and
characters that are created by players in the moment.
A flash mob is a group of people who assemble
suddenly in a public place, perform for a brief time,
and then quickly disperse, often for the purposes of
entertainment, satire, and artistic expression.

5. Comedy Performance

6. Flash Mob