History - O quam beata urbs
Dec 30, 2020 (Olivier Berten)
Changed source
remarks
occasion: S. Marci Evangelistae;
book: CattinMS GiuVAM¹ folio, Musica e liturgia a San Marco, Fondazione Levi, 19930v;
sources
[{"chant_id":"13357","source":"40","page":"30v18*","sequence":"02","extent":"1"}]