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

Astrorum altitudinem totamque poli aciem

Three-voice anonymous cantilena

Sources

London: British Library, Additional 38651, fol. 2 (3/3) (fragments).

Literature

BOWERS, Roger. 'Cambridge, Fitzwilliam Museum, MS 47-1980' [in] 'New sources of English thirteenth- and fourteenth-century polyphony', compiled by P. Lefferts and M. Bent, Early Music History, 2 (1982), p. 294 briefly.