La Trobe University - Library: Medieval Music Database - Annual cycle of feasts of liturgical chant, liturgical polyphony and secular music of the late middle ages.

Dies irae dies illa (?Thomas de Celano)

anonymous sequence

Sources

London: British Library, Additional 29987, fol. 63v-66 (1/1).

Facsimiles

The Manuscript London, British Museum Add. 29987, facsimile edition by Gilbert Reaney, [n.p.]: American Institute of Musicology, 1965. Musicological Studies and Documents 13.