I need help creating a thesis and an outline on Polyphony in the Middle Ages. Prepare this assignment according to the guidelines found in the APA Style Guide. An abstract is required. The first parallel organum was the Musical enchiriadis (Musical Handbook) which emerged in 9th century1. Occasionally, two voices in the music began in unison followed by vox organalis climbs to its hiatus, receding at the ends of phrases to the unison. This form was followed by the Ad organum facienddum2 .
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