What is the primary purpose of using ostinatos in music?

The primary purpose of using ostinatos in music is to provide a rhythmic foundation. An ostinato is a repeated musical phrase or rhythm that serves as a stable anchor in a composition. By establishing a consistent pattern, ostinatos can create a sense of continuity and drive, allowing other musical elements, such as melody and harmony, to develop over it. This rhythmic repetition not only supports the structure of the piece but also enhances the listener's engagement by creating an expectation of what follows.

While ostinatos can interact with harmony, contribute to tonal dissonance in certain contexts, or complement lyrical content, their main role is to establish a solid rhythmic base. This rhythmic foundation can support the overall musical texture and facilitate expressive elements, making it a crucial component in various musical styles and genres.