Dot Porter, Curator, Digital Research Services at the University of Pennsylvania Library, offers a video orientation to Penn Library’s LJS418, Passio sancti Blasii. This manuscript was written in Italy in the 13th century, in Latin, and it is an account of the martyrdom of Saint Blaise, bishop of Sebaste in Armenia, followed by readings and chants for a Mass of Saint Blaise. Additional texts, probably in different hands, at the end of the manuscript are mostly for baptisms, but also include one group of prayers for vestments and two rough sketches of Guidonian hands.
You can see the full online facsimile of this work in Penn in Hand and you can download all of the images and metadata from OPenn. You can also download a copy of this video from ScholarlyCommons, the University of Pennsylvania’s open access institutional repository.