Feast: Ss. Trinitatis
Office_part: an
Cantus ID: 005358
Status: SELECTED
Critical melody from http://omnigreg.at/wiki/doku.php?id=ant:0520 no difficulty. Rsigns from H
A.Synopticum has 2 mss with differentia C, 1 with G, 1 with G*. Changed from G* to C. Not settled.