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

Que est ista... Ista est speciosa...Gloria patri

anonymous verse

Sources

Graz: Universitätsbibliothek III. 29 and 30, number 24 (2/2) (n30, fol. 228v-229).

Literature

LEFFERTS, Peter M. 'Oxford, Corpus Christi College, MS 144' [in] 'New sources of English thirteenth- and fourteenth-century polyphony', compiled by P. Lefferts and M. Bent, Early Music History, 2 (1982), pp. 351-352.