Absent from GFS, from the later hand in H. Neumes from H, slightly rectified for rhythm. Critical melody http://omnigreg.at/wiki/doku.php?id=ant:7463 rectified to follow H more closely while remaining formulaic. Some French mss. have also been used, cf. https://gallica.bnf.fr/ark:/12148/btv1b6000531z/f245.item.zoom / TODO make a comparative table, not priority

Typo