This form was also used in a contemporary Aquitanian abridged antiphonary or breviary (F-Pn fonds lat., Ms. 1085), the only difference is that every chant is just represented by an incipit and that the tonal classification is a Latin ordinal according to the system of Hucbald (tonus I-VIII). William of Volpiano followed also here the shape of another tonary type and used classifications like "P TE" for "Plagi tetrardi" as they were already used in the 9th-century Gradual-Sacramentary of Saint-Denis (F-Pn fonds lat., Ms. 118).
Gazeau (2002, 44). Gazeau, Véronique (2002). "Guillaume de Volpiano en Normandie : état des questions". Guillaume de Volpiano : Fécamp et l' histoire normande : Actes du colloque tenu à Fécamp les 15 et 16 juin 2001. Tabularia « Études ». Vol. 2. Caen: CRAHM. pp. 35–46. doi:10.4000/tabularia.1756.
Gazeau (2002, 39f). Gazeau, Véronique (2002). "Guillaume de Volpiano en Normandie : état des questions". Guillaume de Volpiano : Fécamp et l' histoire normande : Actes du colloque tenu à Fécamp les 15 et 16 juin 2001. Tabularia « Études ». Vol. 2. Caen: CRAHM. pp. 35–46. doi:10.4000/tabularia.1756.
One of the earliest Southern French testimonies of local melodic neume notation («notation protoaquitaine») can be found in a gradual written about 890 (Albi, Bibliothèque municipale Rochegude, Ms. 44), where only 27 pieces have musical notation and usually only in some parts. Nevertheless, the scriptor left space for the notator (see the Christmas masses on folio 5r–5vArchived March 19, 2014, at the Wayback Machine), even if it had not always been used for later additions of neumes.
Huglo, Michel. "Tonary". New Grove Music Online. Oxford Music Online. Retrieved 30 December 2011.
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One of the earliest Southern French testimonies of local melodic neume notation («notation protoaquitaine») can be found in a gradual written about 890 (Albi, Bibliothèque municipale Rochegude, Ms. 44), where only 27 pieces have musical notation and usually only in some parts. Nevertheless, the scriptor left space for the notator (see the Christmas masses on folio 5r–5vArchived March 19, 2014, at the Wayback Machine), even if it had not always been used for later additions of neumes.
