Dot Porter, Curator, Digital Research Services at the University of Pennsylvania Library, offers a video orientation to Penn Library’s LJS 97, Eis ta harmonika Ptolemaiou hypomnēma, byPorphyry . This manuscript was written in Spain or Italy, between 1560 and 1580, in Greek, and it contains Porphyry’s commentary on about half of Ptolemy’s treatise Harmonics, focusing on harmonics and acoustics.
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.
The Schoenberg Institute for Manuscript Studies 