The James Catalogue of Western Manuscripts

Title (very faint).
Ἀρχὴ σὺν θεω̑ του̑ εἱρμολόγου...
f.1 τῆ κατ αναστασιμ.
Σου η τροπαιουχος δεξια θεοπρεπως εν ισχυι δεδοξασται κ.τ.λ.
It is a music-book for the greater festivals resembling B.11.17.
On f.102 is
Ἀρχὴ τω̑ν σημαδίων τῆς παπαδικῆς τέχνης, containing an explanation of musical terms, and examples.

2. On f.160 in a hand of about the same date as the rest, with title in blue much faded.
Κοσμᾶ βεστίτορος λόγος εἰς τὴν ἀνακομιδὴν τω̑ν λειψάνων του̑ ἐν ἁγίοις πατρὸς ἡμω̑ν Ἰωάννου τ. Χρυσοστόμου.
Ἤκουσται πάντως ὑμῖν.
ff.166, 167, which seem to continue the text, are in a later hand.
On f.168 are a piece of music and a prayer.
On ff.169-171a music.
f.171b is covered with faint writing, which is apparently a portion of the Vision of S. Paul.

Ayoutanti, A., and H. J. W. Tillyard, ed., The Hymns of the Hirmilogium (Copenhagen, 1956)

Tillyard, H. J. W., Twenty canons from the Trinity Hirmologium (Boston, MA, 1952)

Velimirovic, M. M., Byzantine Elements in Early Slavic Chant: the Hirmologion, 2 vols (Copenhagen, 1960)