I-AO 6

Aosta, Seminario Maggiore - Biblioteca, 6
Number of chants: 2836

Provenance: S. Orso
Date: 1200s
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Aosta, Seminario Maggiore - Biblioteca, 6

Siglum: 
I-AO 6
Date: 
1200s
Provenance: 
S. Orso

Early thirteenth-century antiphoner said to be from the Collegiate church of Sant’Orso (St. Ours), Aosta. Square neumes on a four-line staff with F and/or C clefs; the F line is coloured. Cathedral cursus. 143 folios. One lacuna (after f. 89). Begins at Passion Sunday.

Liturgical Occasions "at a glance" (refer to the index for complete contents): Ff. 1-45: Summer Temporale. 1r, Passion Sunday; 13v, Easter; 23v, Ascension; 26v, Pentecost; 29r, Trinity; 31v, Histories; 41v, Sundays after Pentecost.

Ff. 45-120: Sanctorale. 45v, Dedication of a Church; 48r, Conception of Mary; 51r, Agnes; 89r, Augustine; 98v, Michael; 102v, Gall; 105r, Simon & Jude; 106v, All Saints; 109v, Office for the Dead; 112r, Martin.

Ff. 120-133: Common of Saints. 120v, Common of Apostles; 131v, Common of Virgins.
Ff. 133-140: Invitatory Tones.
Ff. 141-143: Additamenta. 141r, Fabian & Sebastian, 143r, Mass chants.

At one time, this manuscript was part of a larger book. (See the earlier layer of foliation on some folios: f. 31r which was at one time f. lxxxv, for example.) F. 12 is out of place; it belongs before the present f. 1.

Many of the differentiae in this manuscript have been redrawn or erased. The differentiae of each mode have been numbered with a two-digit system: an upper-case letter indicating the final pitch of the differentia and a sequentially ordered numeral.

Chants not found in CAO have been assigned arbitrary numbers beginning with “our.”

The computer index was prepared by Andrew Mitchell and Debra Lacoste at the University of Western Ontario.