Free organum is an early form of polyphony that emerged during the medieval period, where two or more melodic lines are combined in a harmonious way, often with one voice singing a plainchant melody while the other moves freely around it. This technique allows for a richer texture in music and represents a significant step toward more complex polyphonic structures that developed later. The style is characterized by its improvisational nature, as musicians would add notes to the original melody, creating intervals that were pleasing to the ear.
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