Source: SK-BRl (Bratislava) Rkp. 387 Missale NotatumFolio: 238rSequence: 4Full text: Alleluia Laetabitur*Feast: Commune unius MartyrisOffice: MASSGenre: AlCantus ID: g02236Image link: http://147.213.131.4:85/digi/Rkp_zv_387/LKB___RKP_ZV_387_____24TL/SK/1_1_0238R.h…