What is a "theme" in music?

A "theme" in music refers to a recognizable melody that serves as the focal point of a composition. This melody often encapsulates the main idea or emotion of the piece and is typically memorable, allowing listeners to identify the work easily. Themes can be developed, varied, or transformed throughout a composition, making them central to the structure and narrative of the music.

In various genres, the theme may appear in different forms, such as being stated outright at the beginning or reappearing in varied forms throughout a piece, enriching the overall musical experience. The prominence of a theme creates cohesion in a work, guiding the listener's attention and emotional response.

Other concepts in music, like improvisational sections or background harmony, do not embody the characteristics of a theme, as they serve different purposes within the larger framework of a composition.