The Modern Improviser

The Modern Improviser

Kairos

The Art of Playing the Right Note at the Right Time

Chester Harlan's avatar
Chester Harlan
Jul 20, 2026
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The ancient Greeks had a word that every improviser should know: kairos. Unlike chronos, which expresses a chronological or measurable time, kairos underline the right moment. The instant in which an action assumes significance because it is performed at precisely the perfect time. The concept appears as early as Homer, where kairos refers to the critical point in battle, the precise opening where a weapon should strike. During the fifth and fourth centuries BCE, the Sophists, particularly Gorgias and Isocrates, transformed kairos into one of the foundations of rhetoric, arguing that persuasive speech depends not only on what is said but on when it is said. Aristotle extended this idea in both the Rhetoric and the Nicomachean Ethics, where successful action is inseparable from the ability to identify the most appropriate action in a given context

This notion resonates deeply with jazz improvisation. Great improvisers are not simply masters of harmony, scales, or vocabulary; they posses…

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