The sound designer plans and provides the sound effects in the play, including music from existing sources. In addition, a composer may write original music for the show. All the music and/or effects in a play considered as a whole make up the 'soundscape.'
In addition to the sounds of the words spoken by the actors, a play may also call for sound effects to recreate lifelike noises or use music or abstract and unidentifiable sounds to support the drama.