[Cum a]mbularent [animalia ambulabant et

The little text and music remaining from this chant match the responsory 'Cum ambularent' Cantus ID 006353 found on fol. 175r, P-BRs Ms. 28, sung at the end of the third nocturn for Matthaei. The previous chants in Ms. 28 do not match the previous unidentified chant(s) on Fol. Bv.