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One of the highlights discussed is Jaco’s skill in modulating keys seamlessly within solos. The example given involves shifting from A-flat to E major, illustrating his mastery over harmonic movement. Such modulations—done through scale and chordal navigations—add depth and spontaneity to his improvisations, showcasing his intuitive grasp of musical structure.
This section emphasizes that Jaco's technical mastery was not solely about playing fast or complex passages but about the emotional and structural architecture that created compelling musical narratives.