What is an 'ostinato'?

An 'ostinato' refers to a repeated musical phrase that serves as a foundational element in a piece of music. This phrase can be melodic, harmonic, or rhythmic, and it is often persistent throughout a composition, creating a sense of structure and continuity. The repetitive nature of the ostinato allows composers to build variations and complex layers above it, often enhancing the overall texture of the music. This technique is prevalent in various musical genres, including classical, jazz, and popular music, making it a versatile compositional device.

Understanding the concept of ostinato is crucial for appreciating how repetition can impact the listener's engagement and emotional response in a musical setting.