Dot Porter, Curator, Digital Research Services at the University of Pennsylvania Library, offers a video orientation to Penn Library’s LJS 295, Kitāb-i Advār, written by Urmawī, ʻAbd al-Muʼmin ibn Yūsuf. This manuscript was written in Iran in A.H. 815 (1412) and it is a Persian translation of al-Urmawī’s treatise on the theory of music, including division of frets, ratio of intervals, consonance and dissonance, cycles, rhythmic and melodic modes, and the 5-string oud or lute.
You can see the full online facsimile of this work in Penn in Hand and you can download all of the images and metadata at OPenn.
The Schoenberg Institute for Manuscript Studies 