History - Missus est Gabriel Angelus

Feb 06, 2022 (rleduc)

Added remark clarifying versions in this book

There are 4 copies of this chant in the book at 111,[174],121* and 124*, all slightly different. Variation occurs at Virginem in the last syllable (111=124*,[175]=121*); 121* and 124* have different alleluias, and 111 has the Gloria Patri.