The term program music is often used synonymously with descriptive music, tone poem, or incidental music. Descriptive music seeks to describe a particular idea or story through music, while tone poem refers to a single-movement orchestral piece that tells a story or depicts a scene. Incidental music, on the other hand, is music composed specifically for use in a play, movie, or television program to set the mood or create a desired effect. The term program music has been used to describe music from various genres, including opera, ballet, and symphonic music, and has been popularized by composers such as Richard Strauss, Hector Berlioz, and Camille Saint-Saen.