His play needs more than incidental music and sound effects.

In a play, sometimes incidental music is used for this purpose.

He also wrote incidental music for a play about the theater.

All of which can be heard playing in the background as incidental music.

Later in life, he wrote a great deal of incidental music for radio plays.

During that time he wrote incidental music for the stage, some 40 pieces.

A king and a prince at last in death, with incidental music.

What comes across is incidental music, since the story being told lies outside the piece itself.

He specializes in incidental music for media such as television and film.

The majority of the film is accompanied by incidental music.