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Dies irae dies illa (?Thomas de Celano)anonymous sequence SourcesLondon: British Library, Additional 29987, fol. 63v-66 (1/1).FacsimilesThe Manuscript London, British Museum Add. 29987, facsimile edition by Gilbert Reaney, [n.p.]: American Institute of Musicology, 1965. Musicological Studies and Documents 13. |
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