The anonymous secular polyphonic piece "O lealtad" appears on fols. 249v-250r.
For a description, see also DIAMM.
For a digital reproduction of the entire volume of this chronicle in Biblioteca Digital Hispánica, see the following link: http://bdh-rd.bne.es/viewer.vm?id=0000043200&page=1 (The musical work appears in the image 253).
Bibliography of source
List of works in source
Concordant MSS and printed books
How to cite
Emilio Ros-Fábregas, , Juan Pablo Fernández-Cortés, "E-Mn MSS/2092", Books of Hispanic Polyphony, ed. E. Ros-Fábregas (accession date: 18 Apr 2021), https://hispanicpolyphony.eu/source/13502