A a calendar of Apt Cathedral (f. 11-13v), a Hymnary without music (f. 14-26v), and a Psalter (f. 27-106). Monophonic hymns appear on f. 1-10, but one polyphonic three-part hymn has been added on f. 5v-8. This is a variant of APT 16 bis 24 with a different text; like a few pieces in APT 16 bis, it employs the numbers VIII and V to indicate the Cantus and ContraT voices. Only the ContraT incipit is different from APT 16 bis 24, and so it alone is given here. Copied at Apt.

Modern covers of blue and black mottled paper over pasteboard. The flyleaves belong to this binding

Ars Nova; black mensural

3 to 8 five-line staves per page

Modern foliation in black ink at t.r.r.

5v-8

Parchment (corpus); paper (flyleaves)

RISM B/IV 2: A 13th century parchment manuscript with later additions, APT 9 meas. 280 x 210 mm. and contains 106 folios numbered in modern black ink at t.r.r. There is 1 modern paper flyleaf at each end of the codex dating from the same period as the binding of blue and black mottled paper over pulp boards. The principal contents of the ms, all dating from the 13th century, are as follows: a calendar of Apt Cathedral (f. 11-13v), a Hymnary without music (f. 14-26v), and a Psalter (f. 27-106). The only polyphonic piece, a three-part hymn, appears among a number of monophonic hymns on f. 1-10, and dates from the beginning of the 15th century. It is a variant of APT 16 bis 24 with a different text, and appears on f. 5v-8 in Ars Nova notation on 3 to 8 five-line staves per page. like a few pieces in APT 16 bis, it employs the numbers VIII and V to indicate the Cantus and ContraT voices. Only the ContraT incipit is different from APT 16 bis 24, and so it alone is given here.

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1 hymn

Anonymous

i + 106 + i parchment folios, 280 x 210. Modern foliation. Modern covers of blue and black mottled paper over pasteboard. No index. Black mensural notation. The manuscript contains a calendar of Apt Cathedral, a hymnary without music, and a Psalter; one polyphonic hymn has been added.

Manuscript copied in the 13th century, but the hymn was added in the early 15th century. Copied at Apt.