Ostinato

Ostinato is Italian for ‘obstinate’. In music it refers to a repeated rhythmic, melodic, or harmonic pattern that persists throughout a passage — sometimes the entire piece. The pattern is ‘obstinate’ in that it refuses to change; it returns again and again, providing rhythmic, harmonic, or melodic foundation.

The ostinato is one of the oldest and most universal compositional devices. Medieval music used ostinato bass lines (the cantus firmus); Baroque composers built passacaglias and chaconnes on repeated harmonic patterns; jazz musicians improvise over ostinato bass lines (riffs); minimalist composers (Glass, Reich) build entire works from layered ostinatos.

The device creates a sense of insistent, hypnotic motion. Whether providing harmonic foundation, rhythmic drive, or melodic unity, the ostinato anchors the listener while other musical elements develop around it. Ravel’s Bolero is essentially a single ostinato repeated for fifteen minutes with continuous orchestrational variation.

Italian, ‘obstinate, persistent’, from Latin obstinatus.

Maintain rhythmic stability. The ostinato is the anchor; if it varies in tempo or articulation, the entire structure wobbles. Stay locked in.