Fragments of a liturgical book with musical notation a Missal?

Physical condition of originals: 23 ff/pieces; 425x545 mm parchment; black & red ink; 3 illuminated initials.

This file is part of

Project EAP823:

Digitisation and preservation of the manuscript collection at the Monastery of St Saviour in Old Jerusalem
Collection EAP823/1:

Manuscript Collection at the Monastery of St Saviour in Old Jerusalem
Collection EAP823/1/7:

Miniati Manuscripts
File EAP823/1/7/16:

Fragments of a liturgical book with musical notation a Missal?