B-Br-ms-IV-922: Composer name in ms = 'Heinricus Ysaac' / Title as in ms = 'Missa paschale sex vocum' / Kyrie on fol. 117v-121r; Gloria, Sanctus and Agnus dei on fol. 125v-131r / Gratias agimus: [Superius]: 'Gratias ag[imu]s tacebit'; 'Bass[us]': 'Gratias agim[us] tacet' / Pleni: [Superius]: 'Faulx bourdon'; [Superius2]: 'Pleni ialio discantu'
V-CVbav-ms-Capp.Sist.160: Composer name in ms = 'Henricus Ysaac' / Title as in ms = 'Missa pascale sex vocum' / Kyrie only
