A musical work and each of its movements has its architecture, referred to as form. This may be thought of as path that helps the listener understand what the composer is doing in the music. The composer may also consciously decide not to conform to a particular form. Concerts are often planned following a conventional pattern, which can also be called a form. Compositions have their form, as do their movements, and thus a concert may be seen as a structure made up of concentric forms.
Form of a symphony concert
A symphony concert conventionally features three works: an opening work (overture), a soloist work (concerto) and an orchestral work (often a symphony), the latter with the orchestra in the main role.