| 11. | It grew out of a composer's fascination with church polyphony and plainchant.
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| 12. | The text of a clausula differs from that of the plainchant melody underneath it.
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| 13. | It does not use the plainchant associated with the " Magnificat ".
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| 14. | Performances feature the original Bohemian plainchant tradition, including the earliest examples of polyphony.
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| 15. | They were inscribed in empty spaces in a manuscript that otherwise contains plainchants and texts.
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| 16. | He was quite an authority on plainchant.
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| 17. | Newly composed music on new texts was first introduced within the context of existing plainchant.
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| 18. | Of greater sophistication was the motet, which developed from the clausula genre of medieval plainchant.
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| 19. | The other plainchant repertories of the Christian West faced severe competition from the new Gregorian chant.
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| 20. | The principal example of this " unitonic order " tonality he saw in the Western plainchant.
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