Text from BR DA, melody and rsigns from LH83, to be checked against LH19 (it could be wise to swap out episemata for puncta mora, given the metric nature of the hymn)

Typo: comma->dot

LH19 but elongated note at the beginning over verses 3 and 4 have been replaced by virga strata. I don't think the first note of the first verse should be a virga strata, it does not fit with the meter.

Gregofacsimil cum NABC

Aliae melodiae ejusdem metri multis notis primam syllabam ornant (require, ig, varias melodias quæ hymnum Iste Confessor ornant). Iraque duabus notis in eas posui.