Source: PL-Wn 12720 V Antyfonarz opata Mścisława z Tyńca, pars de temporeFolio: 0081rSequence: 3Feast: Nat. InnocentiumOffice: MGenre: WPosition: 1.Cantus ID: a00170Full text: Ex ore infantium simul et lactentium R. Perfecisti laudem propter inimicos